A lot depends on who comes back [for the record, I expect Battle to be gone, but wouldn't be that surprised if he opts to comes back]. If Battle were to return, which I don't expect, then we've got a really crowded backcourt. And the downside [if there is one to returning a 20ppg scorer] is that we'd run out the same flawed backcourt against next season, with the same limitations.
If Battle doesn't return, then we have an opportunity to see more of Frank playing off the ball, which I think would be best for both him and the team. Frank as a versatile combo who can handle, make plays for others, drive, and shoot would give us a little more flexibility on offense -- especially if paired with a player like Carey who can take some of the pressure off of him in terms of running the half court offensive sets. Carey wouldn't have to assume the full mantle of responsiblities handling the ball and creating -- he and Frank could share it, and the team might benefit. With Frank, I think that less would be more in terms of his efficiency. Doesn't matter what you call them -- they'd both be just "guards" who can handle, pass, and score. And while they might not be as "talented" as they would be with Battle, the puzzle pieces might fit together a little better, in terms of on-court compatibility.
Also good that Hughes is showing versatility in practices. He'll be able to play with either of those guys. If Washington bounces back and Buddy can contribute some, then the backcourt depth is overflowing even without Battle.