As a 300+ Game Bard Main, I have a proposal.
Make his Shrine scale with chimes. At "late game" (30 minutes~ in) A good Bard player will have around 70 chimes. Make every 10 chimes collected heal for 30 more HP when the shrine is at max charge.
I propose this because 1) His chimes seem to not interact with his kit much
and 2) because his heals fall off incredibly hard late game to the point of uselessness.

typically but
if I feel our team team comp needs a better way to get in. Then
last item could really be anything, depends on what is needed
. Build gives you ap and hp, armor, and mr so you can survive while having stronger q's and w and being a pretty cheap build for a support. Obviously the build would change if i need more armor or MR and what not or if I went frost queen I go
if needed. I feel like since bard only has 1 damaging ability and 2 ap scaling and wouldn't provide much as a tank that he is best with items that have actives/passives that provide more utility for the team.