People seem to skip the fact that Blizzard Entertainment doesn't equal World of Warcraft and nothing else.
Hearthstone is built around microtransactions, HoTS will be built around microtransactions.
This shouldn't be surprising.
Titan will likely be F2P with microtransactions, building a team specifically for it with the recent reboot makes sense, now is the time.
Be surprised if and/or when, this directly involves WoW, until then, this is standard business and nothing to worry about.