Ashoka was created by Dave Filoni, Lucas just approved it. For all of his faults Filoni has done more to save and integrate old EU concepts into modern Star Wars than anyone else. So for that I am very glad as a big EU fan.
I am very hyped about Ashoka appearing in the Mandalorian. Although to be honest I would have preferred if she died in rebels. It's just such a huge hole the fact that she is never mentioned in Ep III and IV-VI and that she is still around albeit in hiding or whatever. Same with Ezra.
I wouldn't have minded the High Republic thing if it wasn't for the brain storm board that we could see in the video.
Diversity is included twice and for some reason it says 'not pro war'. What does that even mean? First of all, it is called Star Wars (yes there is a war in the stars) and second of all it was never pro war, many times it shows the horrible side of war. So it seems to be they are starting the story writing from an ideological point of view instead of an actual fun and insteresting story. This has alarm bells ringing all over.
Also, this whole story by committee is the most horrible thing in modern day media. We bag out George Lucas, but we are lucky that back in the day you could have one person come up with an original idea and create something new. Nowadays all of that is gone. And it's sad.