Can you give us any insight on your design philosophy for upcoming support heroes?
Will they support mainly through healing, utility, damage, or some combination?
Were there any decisions made to try to attract people who prefer other roles/games to play support, like more mechanically intensive heroes or better playmaking ability?
In general the broad goal is to provide a wide range of playstyle options. There isn't really a big shift in that regard towards being weighted more toward healing/damage/utility etc. We do need to make sure they fit well into 5v5 and are able to have a significant impact on the outcome of a match but that can be achieved in a variety of ways depending on the individual hero kit. Future support heroes could lean more on mechanical skills while others can be geared toward rewarding timing and positioning more than testing things like aiming.