Out of curiosity, I see a lot of this stuff has expiration dates, some of which seem nonsensical, like on shears and needles, which I'd think would last nearly forever if they're not opened or exposed to oxidation. What components really need to be rotated and which of them that have expiration dates can you just ignore or continue to use with reasonable confidence beyond their expiration / use by dates?

Training trumps gear. If you are concerned with expired gear, use it to train untill it fails, and replace with fresh item.
Example video: https://youtu.be/6ULJgkkA_lU
https://youtu.be/XqmtZ0g8D8s

Interesting topic, certainly applicable to shooting sports, in addition to hiking or even as a first aid bag while driving.

There was a table at the WAC show that had medical supplies but we can't go there anymore.

The blood clot packs are essential.

I have IPOK kit from North American Rescue.

example "pinch lights", except you want those that include an on switch:
https://www.amazon.com/LRI-PWK-Photon-K ... TK0X91R8YQ
https://www.amazon.com/Radiant-CB-W-Tra ... B000BIW0R2
a clip that allows you to clip on brim of your hat is also a thing to consider.

good kit, great gloves

so looks like this kit would be more inline
https://darkangelmedical.com/d-a-r-k-d-a-r-k-slim-trauma-kit-refill-vacuum-sealed-insert/
with the optional upgrades it comes out to $120 i don't see a TQ listed, so that'll be extra, need a pouch for it, that's another $50
full blown kit looks to be about $230
https://darkangelmedical.com/d-a-r-k-trauma-kit/

You can't shoot your way out of a heart attack, and you can't buy your way through emergency treatment of one or more gsw.
Start by defining the mission/circumstance you want to prepare for. For example, is there first world care minutes away on call through 911, or not?
From there, get training. With training comes skill (which is more important than gear) and answers to most of your questions about what gear to buy. For example, does your local good Samaritan law "hold you harmless" if you misuse your chest decomp needle? If not, buying a kit with needles is a waste. Pouch selection is driven by mounting location: on plate carrier? war belt? ankle?
After that, you will always do better putting together your own kit, packed and mounted the way that makes sense for you, than buying pre-packaged. With the money you save, build a backup kit.
If you plan to aid anyone other than yourself, know your local laws.
An ifak is a toolbag, not a talisman.
Example (free) training: https://cms.bleedingcontrol.org/Class/Search

Anyone try one of those ankle worn med kits?

this one is comfortable: https://warriorpoetsupplyco.com/edc-ank ... kit-empty/
my edc: https://www.rescue-essentials.com/RE-ta ... dical-kit/
at the range, extra tq on belt: https://www.thewilderness.com/medical/p ... elt-pouch/
extra in truck, on rifle stock, and on plate carrier (centerline)
haven't tried pocket carry: https://www.thewilderness.com/medical/t ... -tq-pouch/

Some people overload their IFAK, or med gear, not understanding what it is...

The “I” is for Individual....the goal is to save someONE...yourself, shooting buddy, spouse, stranger, etc., ...

It’s an effort to stop an individual from perishing until help arrives.

When you start overloading it to encompass more than that, you actually make it so cumbersome, that you may not be in position when it’s needed.

You can make bigger kits for your vehicle, your pack, or whatever, but an IFAK you always can carry, will be there more often when you need it, than a kit that has everything you would ever need, that’s back home.

Some think you should only carry things you only know how to use. I disagree, to a point.

Sometimes, someone with more knowledge might be using your kit to save you.

So, I carry up to the next level of what I know...and then study.

An example would be, let’s say you know how to use everything in most of the kits mentioned here, except a chest seal.

Have one, and study how to use it. Then, add the next thing, and study how to use that.

Like mentioned before, you can’t prepare for every scenario, just examine your lifestyle, and what may occur, and have a bigger kit in your rig...

I mentioned in the other thread a urgent care medicine pack. When I was deployed our IFAKs contained a small baggie with 3 pills - a potent pain pill, a broad spectrum pain anti-inflamatory pill, and a broad spectrum anti-biotic. Instructed that if we were badly injured, priority is to take that packet at first opportunity. Relieves pain, reduces shock, and immediately starts fighting infection and inflammation.

As I'm thinking of it, since pills take so little space, it might not be a bad idea to have some potent caffeine pills like No-Doze or similar to ward off fatigue if you find yourself in a dire situation on little sleep. And a handful of strong Ibuprofen if you have to muscle thru some hardships but you're not injured, just in pain and exhausted.

Also, earlier this year I put together a few medical kits and bags of various sizes, from a full stuffed red backpack trauma bag, to an IFAK or two.

I got a lot of the gear on clearance from LAPolicegear.com and they frequently have large discounts and clearance and % off deals. I got piles of a wide range of gear, similar to what's listed, for just a not much $. Some core needs for medical bags and pouches. Good idea to have at least one well stocked medical bag, probably red in color so it's easily distinguished, along with your smaller IFAK and car kits and house kits. Here's a sample off my receipt.

Prices are each and total. Copied from one of my invoices.

5 FCP-03 Israeli Medical Bandages 4" Emergency
Bandage - White
$6.80, $34.00
2 491 EMI Lifesaver CPR Mask Kit $6.99 $13.98
2 OAL_000 Tactical Medical Solutions Olaes Modular
Bandage
4 Inch - Flat
Packed
$6.95 $13.90
4 FCP-12 Israeli Medical Bandages 6" Emergency
Bandage - Mobile Pad - White
$9.90 $39.60
1 NAR-ARSZZ-
0056
North American Rescue ARS
Decompression Needle
$9.99 $9.99
3 BC01 H&H Medical Big Cinch 12" x 16" Abdominal
Bandage
$7.99 $23.97
4 HHMCB01 H&H Medical Mini Compression Bandage $5.99 $23.96
3 HHWSK02 H&H Medical Wound Seal Kit $8.99 $26.97

John Lovell, Warrior Poet Society, discusses IFAKs:

https://www.youtube.com/watch?v=Y_O7sgB8WEY&t=57s

https://www.youtube.com/watch?v=tr94FS58MpA

Thoughts about gear that is in a range bag vs a hot car? I mean, is that going to affect the shelf life of certain stuff? I feel like i should set up a basic kit for the daily driver.

Couple of TQ's, a few H&H's or Israeli bandages, quick clot. In any IFAK I carry.

If I am shot I won't be putting an NPA in my nose. If I am shot I won't be putting a 12g needle into my chest. I'll be stopping the bleeding and hoping someone is close with an aid bag (typically I'll be carrying the bag). If not it's maintain until I expire or help arrives. No need for pain pills. Chest seals are cool but why not use the wrapper of your H&H?