But Blizzard does solo as a service with multiplayer elements. Of course, I would also prefer a proper solo game in the Warcraft universe, but that is not happening.
Nevertheless, I am pretty sure that Microsoft will make them exploit the franchise with new games. It is insane that Blizzard has not expanded the Warcraft universe with more games besides HS and Warcraft Rumble. My bet is that by the time that the Worldsoul Saga is done a new Warcraft game will be almost ready for launch.
A Warcraft Genshin Impact will be an instant mega success. I think that Blizzard never really considered it an option because Genshin content updates will make them look like fools. They have no chance of following that cadence.