Not a great choice, not a terrible one either. I loved Firefly and Serenity, but I have not seen anything else from Whedon close to that, and Avengers was a fun action flick, but not the kind of thing I want Star Wars to be. Honestly, it's hard for me to treat any such Star Wars related news with much excitement. It's not like anything can shock or offend me as a Star Wars fan anymore. The shock value there is entirely depleted.
I think the only news that could get me excited is if they got
Kenneth Branagh to direct. He is one of the greatest directors ever, he proved with Thor that he can do big budget sf blockbusters, and I think his shakespearian experience could help him bring back the larger-than-life quality and that certain intangible "magic" of the original SW.
Hell, if they got him to make
William Shakespear's Star Wars movie I'd be looking foreward to it more than the new trilogy.