Agree with all of this.
Unfortunately, the limitations (guard multiple positions; shoot from deep; run the floor; adaptable to a 5 out system) for both Marsh and Bradford are things that are generally needed for the current version of basketball. Of the two, Marsh is the most athletic and has the better chance to evolve to overcome at least some those limitations, but think that both Marsh and Bradford are better suited to play basketball 20 years ago or even 10 years ago rather than today. Forbes has talked about it, and WF has experienced it, but when WF has just been killed by opposing bigs that can stretch the floor. Not sure Marsh or Bradford will ever be able to play against that type of big.
If I had to guess, would think that Keller has the best chance to evolve next year into a guy thI aat can play the 5, but still do all of things needed to optimize the way WF wants to play.