Not sure your point. Fleck I think is only in his 3rd year. I think it will be more of an advantage him having more players to fit his style, players he recruited. Every team has seniors. I doubt very much they are senior loaded at this point. They have a young QB who is very good. I'm going to go out on a limb and say they might be one of the younger teams in the BIG, but I have not looked that up.
If I remember correctly quite a few transferred when he got the job and I think some were kicked off the team prior to him taking over.