Wimbush is a dynamic, game breaking athlete. He has a huge arm which compliments his running well because you either have to bring the safety up in run support and risk getting beat deep or leave the safety back but get marched down the field with a ton of zone reads. He got beat out by Book who ended up being really good, but a big part of it is that Book fit the current team much better than Wimbush. Our receiving core this year had more big possession receivers as opposed to the speed guys that could take the top off the defense. Wimbush couldn't hit guys in rhythm as well as Book and we didn't have the speed necessary to utilize his arm. We tried to fit a square peg in a round hole with the Ball State and Vanderbilt games, so you can watch those to see how he is when we try to win with just his passing. Versus Michigan we were more willing to let him run and put his body on the line, so its a much better representation of him playing to his strengths. He is also much better when going up tempo, partly because it seems some of his struggles passing is a mental issue so not having time to think about it actually makes him better.
As for a cultural fit, I don't think you have to worry. Brandon is an outstanding young man. When he got beat out he didn't pout or divide the locker room like we've had happen before. He was always the first off the bench to meet Book coming off the field. Everyone in the program has a ton of respect for him, so much that even though it was common knowledge he was going to transfer no one talked about it during the bowl week until he announced it after the game. You can go and look at the instagram post announcing his transfer to see how many people are thanking him, and not just his teammates and coaches, but other regular students he had an impact on.