I think it all boils down to only having 4 starters. V is just trying to find what works, and by shifting Felts over to the 2 he gets more perimeter threats offensively. As I've said for a while we only have JRich as a true outside shooter besides Felts; with Touch in we have two off guards who can drain it.
IMO DA would fill the role better; he'd add another threat from outside.
I know we need another big, but I'd really like to get another guard to replace Touche' eventually.