One simple balance change for Vayne
Vayne
seems to me in solo queue to be picked quite often, and in most levels of play does well most of the time. She's not too bad but since the ADCs on 5.22 are recieving many changes and balances. I saw that the % HP true damage on her Silver Bolts (W) was being buffed in RiotRepertoir's thread of the smaller changes: http://boards.pbe.leagueoflegends.com/en/c/champions-gameplay-feedback/N7VZrAws-smaller-522-marksmen-changes-pbe-feedback-thread .
The little change that I think would make her a little less annoying for tanks to deal with is making the Max HP into Current HP (with the minimum damage still remaining). The tanks are gonna struggle most likely after the AD update and this would be one less worry off their shoulders.