Power Armor:
I want more power armor variants and some awesome armor effects.
Scout power armor
Original F1 Power armor
Fallout 2 Enclave power armor
Fallout Tactics power armor
Medical power armor
Prototype Power armor (very bulky,heavy,big, and slow but offers the best protection)
Scientific power armor (underwater and hazard versions not designed for combat just to work in hostile environment)
Some power armor effects to feel the awesomeness: small caliber rounds ricochet from the plating, when hit by an energy weapon some movement speed reduction and visor blackout,flashing or flickering, one handed weapon handling (not dual wielding),
scratched or broken visor after surviving a headshot, some filter sounds when breathing, audio comment when severely injured
I doubt we'll those in their actual stats. They'd simply be overpowered unless they bring back different types of damage (plasma, explosive, etc.).
As a side note (a personal preference rather), a prototype shouldn't be better, as in more protection, but should offer a unique feature that didn't have the chance to be seen through to mass production, like the medic PA. It could be a small bonus to melee damage, extra limbs health, lighter weight but same DR/DT, a lot of damage reduction from free falls, chance of random EMP bursts when hit... it's a prototype, possibilities are endless. :twirl::P