I'd like to see more underwater content / visuals. The visuals is low on the list given the lack of content, so they seem to go hand in hand as desires lol. Personally if we're talking water I'd like to see the 'top' of the water focused on especially. Get us better water shaders . Give oceans actual 3d waves and such.

GW2 combat, imo, underwater is fun, but there might be reasons why they rarely use it.. I don't play enough to say why, just know that I thought it was nifty. Given they use a loading screen, which is fine, having fights not on the floor of the water would probably be a nuisance though so I think we're stuck there.