I've been thinking (wierd,I know) that it would be cool (in an idealized suit) to have some sort of ribbed latex seal around all the parts, so that any gap between your bodysuit and the armour is only seen as a 'spacey' looking seal.
Sorta like the neck seal, but permanently attached to the part. I guess basically a 'real' environment seal. Not really functional, but just for looks.
I reckon it would look cool especially on the forearms..
Maybe I'm just dreamin'.