Well, that's pretty well thought out, and sounds reasonable, but... All I know is I went into my first game knowing about all of the changes and thinking it would still feel like ARAM. Then as the match went on, more and more all I could think was "this **** is ARAB."
Honestly though, I think I could get over everything else except for one thing: the bushes. I see your other post that says the bushes help the melee, but that counters some of the things that I love about ARAM. How melee are at a disadvantage early, but if you play smart or have the right team, they win you the game.
Maybe it seems silly to you, but the bushes are a dealbreaker for me. Unless people reach a consensus that bushes aren't allowed in this new hybrid mode, I will not play it
Sadly, it would be very difficult to enforce a 'no brush' rule on the map. As I said, play it a few more times yet before swearing it off entirely. After accepting a few of the inherent differences with it, I really got to enjoying it. I won't say I feel like the map is perfect, but it is pretty darn good.