About Heimerdinger...
I hate his Q. You cannot stop players from abusing the cool down feature. Why can't they up the cost of his turrets to 80 mana per turret?
I also wish that his R+E was more viable. The multiple bounces are nice to stun more than one enemy, but its no R+W or R+Q. Why can't his R+E just be a 1000 range area effect that stuns 1/1.5/2 seconds dealing 200/300/400 (+50% AP) damage? His range to cast the ability will be the same range as his normal E.