The next Overwatch character and hopefully that there are more maps/game modes coming
Warcraft 3 Remastered (I'd love WC4, but that seems unlikely at this point)
If Diablo 3 and SC2 aren't being actively worked on any more, I want to know what their respective teams are working on right now.
That there will never, ever be Vanilla Realms. (so some people can get over it and move on with their lives and everybody else doesn't have to worry about Blizzard wasting resources)