Well that's disappointing again, ingame cutscenes suck, they should stop do them entirely in 2020, that's a disgrace.
If any, for Tyrande's story, she should have replaced Sylvanas in Shadowlands cinematic. Well thinking about it it would make sense and wouldn't be tons of work beyond a new CGI model : she can use bow and arrows too, and you could justify her breaking the veil to Shadowlands because she wants to kill the Jailer to defeat Sylvanas (well, considering her "revenge" is not achieved yet, of course, because we all know it isn't, except WoW writers apparently).
Honestly I would have preferred that over a third opening cinematic in a row featuring Sylvanas. More new figures please.