Here's my take (But there are a lot of what ifs)

Yes Muffet would probably have coached a few more years because Clark would have gotten more wins. She might have been still coaching today which would change recruiting since Niele was an assistant in the NBA.

Yes I agree we'd probably have two championships with Clark.

I thought we would have been seeing a Clark-Maddy combination for the duration of their four years. I think Maddy would have been the beneficiary of Clark's passes like Monika Czinano was. Sam Brunelle also would have had open threes playing with Clark.

Caitlin still develops into the prolific scorer but she doesn't have to score as much because of the talent around her at ND. She may not break all of the records she currently owns.

I think that Olivia probably goes elsewhere if Clark was here. Olivia wanted to play early and often and that wouldn't have happened with Clark here.

Soni, may have come here as she wanted a school with strong academics but she said that Niele was the difference between ND and Stanford. Hannah has a close connection with Niele and also may not be here.