I really enjoyed my time with PlayStation All-Stars Battle Royale, and I wouldn't mind a sequel somewhere down the line with more characters that helped define the platform (if Sony could work out deals with Activision to get Crash and Spyro, that would be great).
It seems as if I might get my wish, as an Art Director job posting by SuperBot might be a sign for a potential sequel already in development. Not only is the listing specifically for "a project such as PlayStation All-Stars Battle Royale," but it also requires that "candidates should be well-versed in video game aesthetics, with a particular emphasis on the history of PlayStation titles and characters"
Pretty telling, don't you think?
Art Director [Gamasutra]