From a skills standpoint...I think Monta Ellis could have some success, he's been showing his court vision this year and facilitating quite nicely for an off guard, and when Curry has been out and Monta slides over to PG, his assists numbers went up to like 8-9 a game.
I was actually talking to a buddy of mine from Chi-town yesterday and we were discussing Rose and somehow Monta's name came up and then we were trying to figure exactly what makes D-Rose the better player. We both agreed that he is, and I think it has more to do with his leadership and savvy, but Monta has almost everything that Rose has, except the hype and love from the media. Based on his game this year, you slide him over to PG and you have the points and assists. He might not be as strong as Rose but there's a chance that he could be quicker (he is at least as quick as Derrick,) he's shown his court vision this year without Curry out there (shit, he's shown it with Curry out there sometimes too), he has a better shot than Rose, he can thrive in transition or in a half court set.
I know there will be some who read my post and be like ":? ***** please," but Monta just had a game of 26p, 11a, 6r, 2 steals and a block on the 16th against Dallas, and 39, 11, 6, 4, 1 against Orlando on the 11th. You can also throw in a 15 & 9 game against Sacramento. All of those games were with the team's actual point guard out there.