I can respect that. But there are already things that become totally redundant late game.
A couple of ones that come to my mind are:
- The Pack Mule perk, which becomes useless as soon as you fill in all mod slots with triple pockets.
- The Well Insulated perk, which is useless as soon as you find the best clothing in the game.
- The Grease Monkey perk, which is also redundant as soon as you already have built or bought the vehicles you need.
Pack mule still has some value as it allows you to use additional armour mods instead of having to use up a slot in each piece of gear with a pocket mod.
Well insulated allows you to wear a college jacket for a speed buff instead of a duster/puffer jacket in inhospitable climates.
Grease monkey - yeah in single player at least it's redundant once you've used it.
All of these though are, I hope, going to change in the future. At least the systems they impact are set to change, hopefully making them more valuable in late game. New armour system is going to potentialy impact pocket mods, weather protection and armour mods generally. Not having to rely on pocket mods may be really valuable in a system with only four apparel slots. Equally you may not be able to cap inventory with just pocket mods in the new system.
I'm also really, really hopeful there's a plan to make temperature more impactful again. Logically you'd do this alongside the armour system revamp, so I haven't been surprised nothing has been done on that for a while. More impactful weather plus potentially not being able to achieve total thermal protection with mods alone (possible in the new apparel system) would potentially make well insulated very valuable indeed, even late game.
Grease monkey, as you correctly note, is one of those perks that pretty much has to be tweaked under new crafting. Having a perk that only has the effect of lowering the resource cost of something you probably craft once, and buffing your magazine drops a bit is comically bad.
We have to wait and see really on this one. If after crafting and armour changes, which we know are coming, and a perk rebalance, which is almost certainly coming, there are clearly perks that are only useful early game, I'll have to accept that making all perks at least slightly useful all game is not a design goal. I really hope that it is, but I accept I've never heard anyone in authority state that. I have inferred it from existing design decisions.