Bard Heal Shrines are Poor After Laning Phase
I have built full AP Bard and was shocked at how little his heal restored after about the 20 minute mark. In addition, once you start grouping as a team, everyone becomes so mobile that there is no way you can start placing heal shrines around and let them "grow" after 10 seconds while making sure that 4 other people stick around to utilize them. I would say the movement buff of the heal is more useful at that point than anything. I think all of his other abilities are great but this ability should transition to something more meaningful in the later stages of the game. Perhaps reduce the time the heal needs to upgrade or make the heal more powerful in general.
EDIT: For those of you saying "bard is my favorite and he is already super strong and doesn't need any help," I don't believe any of you. If I loved playing the Bard I would want to go out there and dominate with him by having Riot make him as strong as possible. Your desire to play Bard but lack of desire to make him incredibly efficient at multiple phases of the game is both confusing and somewhat unbelievable.
to give my heals/speed boosts that are cast on someone directly even more of an oompf.