I think 'necessary' is a bad way of phrasing the question. But I'm all for it. Especialy so if it combines base jumping.
Good idea. Why don't you post it in the wishlist thread
Not necessary tbh I'd rather just go in there with my bare uniform and a parachute because its easier to land in hot zones... You'd be dead by the time you detatch your "wing suit" when your in a hot zone :P
Yesterday they weren't necessary. Now they are.
Guys, you seem forgot the advantage from gliding in the dark. Stealthy, noiseless, and can pass over certain of obstacles when in flight.
Wingsuits would be outside of this engine's ability unless its simply for looks, since as of now "special abilities" the customizable costumes are able to have are severely limited. Of course a hardcore coder could easily crack this, but making outfits customizable more than just cosmetically would be an amazing addition to vanilla Arma 3.