Starcraft 2 came out about 4.5 years ago. Hearthstone and Diablo 3 don't support modding, and all indications show that Heroes of the Storm and Overwatch won't either.
After reading some initial reviews of Diablo 3, I just got Torchlight (1 & 2) instead, and haven't really missed D3. They are not a AAA games, but they do have an active modding community.
