@Rebonack: Personal score must die, yes. Quests only spawning at bot would help with some of the RNG nature of quests, perhaps they should spawn at certain points too? Your idea about "The Market", well... I don't want a halfhearted rework, so it's probably best to stick to the current 5-point formula. What they could do is reduce minion gold and increase ambient gold gain. This would also encourage a more fluid bot lane, since it'd be easier to switch bot laners and have a shot against the enemy bot laner.
Blind Draft wouldn't help that much. I'd probably be more inclined to ban annoying champions (like Shaco) than "OP" champions. I think it's probably a better idea to just add map-specific nerfs if they're needed. Right now I don't see any pressing need for any additional map-specific nerfs, the map is reasonably balanced.