Yes, that is part of why I mentioned it would be interesting for him to return. Though instead of one of the gang he'd better to be the or one of the focus characters. The whole temptation, having to prove himself, not being trusted, ect, could be a very interesting story and movie indeed.
While it would be nice to see certain other movie characters appear he is one of the ones that could bring along a very interesting and very good, maybe complex, plot as well, instead of the typical you know what to expect plot.