Blizzard's been doing pretty well since Diablo III. They're recycling the lore, but they're actually moving in new directions with the content. They've been pretty radical about implementing what I assume is a lot of market research.
1) Hearthstone is WC lore with a casual MTG feel. It's a fine game, and they departed from many of the BS restrictions of paper card games (draft pods, bartering, animations), overall making it more enjoyable. Compare to Magic Online where they're crippling themselves with a terrible UI, insane prices ($14 for a draft that in hearthstone would cost like $3 or $4), ugly HUD and graphics, clunky everything.
2) Heroes of the Storm is SC and WC lore in a moba. Killed off all the hardcore elements of Moba to bring in the casual crowd (srsly, no last hitting, no gold, no items). It's a surprisingly fun game that doesn't feel like you need to train at it to enjoy it.
3) Legacy of the Void is starcraft but you start out with double the workers and have to expand far more rapidly due to resources running out faster. Sounds small but the game will never be the same. They also made more units have simple activated abilities which places more of an emphasis on soft micro (skill shots as opposed to marine split and shoot'n'scoot). I'm yet to play, but from what I've seen it looks like it's a lot more interesting that Heart of the Swarm.
4) Overwatch. Haven't played, but it's an FPS which afaik they haven't done before. Looks like they're not recycling lore with it either, and it's got a lot of hype behind it. Seems like they may have borrowed from TF?
Anyway, what I'm trying to say is that despite them having made some pretty shitty moves, they seem to be making a comeback and I'm considering becoming blizzardfanboy once more. That they're actually moving forward when so many big name game companies are content not to is great. They look like they've done a lot of research into all the pies they didn't have a thumb in, spotted potential for improvement, and committed hard to bringing some competition to established names.