Well keep in mind mmorpgs have become highly competitive, they may just not see it being worthwhile to maintain warcraft as a mmo.
The most popular RTS in esports on the other hand is still starcraft 2. Blizzard has always been the kings of rts games, so it could be very likely they go back to their roots to grab some cash.
Yeah we had a good build back in WOD, but for some reason they scrapped it and went back to “immobile, hard hitting, and tanky”. It’s generally a frustrating playstyle when you are rp walking for 30 minutes every bg.