These things almost always come down to $$ and power.
To do what you're suggesting -- increase TC and JG salary to a point where they are incentivized to stay -- will be cost prohibitive. Do you really think Iona can afford to pony up somewhere around $1 million per year in order to retain Cluess and Grasso together? Stop living in dreamland. That is not happening.
Going to be impossible to convince a young assistant coach to pass up more money and a HC opportunity to stay at Iona. And frankly, none of us should want that anyway. Grasso has paid his dues. He deserves his shot to run his own program and a big step up in $$. We all should be rooting for him to get the QU job. I still don't think it's a done deal like some suggest, but he certainly deserves it.
Grasso has earned a shot. While it would be nice for Iona to retain Grasso and Cluess, at the end of the day its more important to keep Cluess.
That's a very big bet by Quinny if they wind up paying that much. I think they really do have delusions of grandeur, since they have really done squat in the MAAC. However, if they shake up the MAAC with a true big name hire, this could be interesting.
My guess is that they will wind up significantly overpaying for whoever they hire.