If you want innovation and something cool & exciting, dont look towards Blizzard or any other big gaming org(EA, Ubisoft++). What you see is what you get. Ubisoft can keep shelling out AC games to the end of days and it will probably still do decent sale numbers. AC was awesome and fresh when it first launched, a decade later? More or less the same except it looks prettier and a few cool storylines. Beyond that, its nothing wild.
It is how it is with these giant orgs. They dont need to innovate, they need to increase revenue. Thats where the priority lies and when you are that point the innovation, desire and geniune passion to build something great dwindles.
Not to say Blizzard devs of today dont have desire & passion for the games, but the main focus here is greater revenue every year as we have seen the choices they have taken for many years now.
Blizzard of today could never create the warcraft world from the ground up, atleast not as we know it. Just look how they treat it today(Warcraft reforge anyone?).
When it comes to this mobile game, it is what it is. Mobile gaming is a HUGE market and from a financial point of view this makes perfect sense. Millions will play it and throw money at it. Low cost to produce, high income. They can keep building on this and start selling merchs to the younger generation that will experience the warcraft franchise for the very first time via this game. And yes, thats sort of sad.