Come to think of it, make a map that's just Summoner's Rift turned sideways. Then purple team isn't screwed by having an almost 50% visual range cut at all times unless they spend a lot of time unlocking and moving their camera.
Different maps that offer the same core concept (mid lane bot lane top lane) but with different looks and different jungle baddies. Just to liven it up. Gold loss is a good idea as well as creep denies. Maybe slightly less tower damage? Larger variety of USEFUL items.