Bard buff
Having played a ton of Bard games, I think I have a very good grasp on his gameplay. The bottom line is that Bard needs a HUGE buff to his W.
Let's compare it to Nidalee's heal since her heal grants an AS buff for SEVEN seconds, while Bard's grants a MS buff for 1.5 seconds. Nid heals 30-250 at ranks with a 50% AP ratio Bard heals (30-70)-(150-230) with a 20-45% AP ratio
Bard's heal should be stronger for two reasons. First, he's a support. Second, the MS buff has a very low time. The start heal should stay the same so it isn't an instant save for someone getting ulted. This really doesn't impact his gameplay. The max numbers should be 100 at rank 1 and 300 at rank 5 with an AP ratio going from 30-60%. Considering the high early mana cost (Nid 60-120, Bard 100-120), this is very reasonable.