This has gotten boring cause people are arguing semantics and not the actual issue.
Most of what's suggested is making several different armors instead of one catch-all called "power armor" giving a +X points of STR.
Why a completely powered armor:
Doesn't have any kind of stabilizers to improve accuracy, surgical skills, overall dexterity?
Doesn't have any kind of VR visor which highlights targets, IR vision, UV vision?
Doesn't have a monitor capable of displaying: medical data and injury treatment methods, scientific data, chemical information.
Doesn't have active camouflage? There's even stuff that can change color with current right now.
Doesn't have voltage on the upper body to shock melee opponents into submission?
Doesn't have built in multi-band radio with retractable antenna?
Doesn't have automated tourniquets for stopping bleeding, auto-applying clotting agents, automated drug injections against shock/stress/fear/radiation?
And finally, but most importantly why doesn't it have a damn backscratcher?!
If I was living in a scifi world:
If I was a military contractor that's the first things I'd offer to provide because that would give an edge over competition.
If I was the project manager on behalf of military that's the first things I'd ask for because losing just one suit cause some soldier panicked/went into shock is extremely expensive
If I was someone who wore a powered suit those are the first things I'd handicraft if they ain't provided.
And that's just a few ideas off the top of my mind that in my opinion are better than going for a classic +3/4 STR boost like fallout did.
I completely agree.
Power armor should be made more versatile - which would give more models to choose from, each with its own specific enhancements.
And lets not forget the drawbacks too, since carefully designed sensible ones could provide balance and make PA less of an ultimate armor. I would rather see it as a limited resource instead.
Power consumption is certainly one such possible drawback. If amount of "fuel" left in some PA is limited then the usage of PA would change radically. (provided there is no way of fueling it again or if even that is short term)
Inability to sneak around would be another good balance, even if PA had some advanced camouflage capabilities.
But those are usually reserved for other types of armors in order not to make PA the ultimate mcguffin item.
I would also limit the availability of enhancements based on skills of a character using it.
High technical and science skills should be required to operate it, right?
Especially if there is no more training and education about it available.
Each PA should not be fully operational either.
And damage it sustains over time it is used, should shut down its specific features too.