How about something like inbuilt weapon system in Far Harbor? Basically like Terminator astartes have in built power fists, reaper auto-cannons and what not. Maybe even something like a force shield that could absorb incoming damage for a period of time.

Also, I'd like to see return of cybernetics. Im' sure a lot of us have been dissapointed when we realised we won't be getting any cybernetics from the Institute. So what I would like to see is not just a load of text and stats increase, but actual visual upgrade!

A cybernetic arm, head, legs, maybe even wrist energy cannons and similar.? Wouldn't that be cool?

there's several old post about this, rather it's termed implants as they were commonly used in FONV Old World Blues