Dave has continued doing Star Wars since 2008. For good or ill he has had a bigger stamp on Star Wars than George Lucas for the last two decades. Lucas having not written or directed a Star Wars since 2005. Filoni been there for over 17 years. 17 years nonstop working in SW.
The prequel trilogy and George stepping away after that to let Filoni run the Clone Wars was ages ago.
Then he wanted to do live action Star Wars like a tv producer and have other people write and direct it, Star Wars underworld.
Then not being able to get Underworld made and not thinking he could adjust to the coming streaming landscape he sold to Disney.
Oh I got these treatments In a drawer, maybe Iger will give me 4 billion for them. That is what I think he may have thought.
Apparently most of the concepts from Underworld already got mined for all the Disney movies and shows we’ve been seeing this whole time anyway.