I appreciate your perspective. With respect to your statement '...with the right coach and proper investment, they could’ve remained in the 60-90 range...'. This is certainly a lot easier said than done. While overall, I agree that it was time to move on from Whitesell, the choice initially had some merit, keep team together, an experienced coach (albeit an average past record). The team was even ranked in your desired range in his second year (77), but they were stopped short by a hot Ohio team led by Preston. My point is not to reopen discussion about the choice, as it proved not to work out, but to emphasize it is not a simple task to pick the right coach. There was certainly some carryover from the success of Oats into Whitesell years, but in the end Whitesell was not able to capitalize.
To me the sweet spot of a MAC coach is one who keeps the team successful but stays put, Groce (Kenpom ranks between 80-110)? It will be interesting to see if Groce stay put. I would have said Kowalczyk but he has not delivered a MAC championship but has delivered rankings in 60-90 range. I struggle to see a scenario where you have a carousel of coaches and you remain consistently competitive.
As for rankings, this team has had two very bad games which justify the net rank of 360, and two decent losses (JMU and Butler) that suggest a better ranking. Overall, I do think their true ranking is slightly higher, ~330. I think if the team brings effort on defense they will be competitive in more games and their rank will improve. As you say, it is in Halcovage's and the team's hands how much the rank changes from here. I wish them success in that effort.