Board Thread:Sly Cooper film discussion/@comment-25091239-20160705011802/@comment-1845428-20160715194730

I doubt the only reason they want to create their own member is just to leave a mark on the series ("we created that character"); they may want to do more with it, like set up a plotline that spans several movies (if they are able to do several movies) with that character at the center, for example.

I personally hope they don't try to do multiple movies, I would be too upset if we get another cliff-hanger that may never be resolved.