Will CG add more, better known characters?

I dunno, it's all personal. I never played the Force Unleashed games, so I don't really know any of those characters you mentioned. 

Though I don't think I'd call Bib Fortuna obscure. He's a speaking side character from one of the original movies, and he appears in material from both legends and canon, including a canon TV series. 

I don't connect with all the characters we get (or most of them, probably). But I'm pretty happy to be getting some from Andor right now.