I think they have the personnel to play fast next year. Rollins, Edwards, Felder, Brian Sullivan, and Harris are very different players than the Pollitz twins, Hausfeld, St. Clair, etc.
Curious, what playing fast means. You hear it all the time, but don't truly see it often. Teams that typically run all the time struggle. I am not counting teams like UK that are good no matter what they do.
I think a good comparison would be Dayton under Brian Gregory. The ran has much as possible and played very sloppy basketball. The Flyers had the talent to do well, but underachieved by not playing balanced.
In the past, Miami gets a few upsets or almost upsets better teams in the early portion of the season by slowing down the game. If they run, they would probably get blown out in those games.
That being, the new coach is a good talker - so I assume that will translate in recruiting and in motivating his players.
But, I am not sure if you want to constantly run up and down the court if your team is not as athletically gifted as their opponent.