Oh yeah, I was just saying that as a short hand. You'd want to pick and choose mechanics to bring over or modify, but OP specifically mentioned wanting to "slog around" implying heaviness or something more than cosmetic or survival necessity from wearing the suit, not that that's what everybody would want.

With OP's vision in mind you'd at least want the animations for equipping and unequipping the suit, heavier sound effects, leaving the suit behind by itself or in a rack or locker, extra carry weight, extra modification slots, the visually noticeable but intrusive helmet overlay, maybe some others, but that gets close to what it seems like they want.

You'd want to balance it somehow so it's not always a positive to wear if it were some sort of special suit that wasn't required for zero atmosphere traversal, you could go the fusion core route like 4 or figure something else out.