I checked into all this:
If Keegan Murray stayed all 5 years and stayed healthy, he probably would have passed Maravich. Of course, it still would have taken Murray 5 years to surpass what Maravich did in 3.
If Trayce did come back for a 5th year and was healthy, he would have a legitimate shot at passing Calbert. It's not a lock, but he'd have a 50/50 shot. Luka Garza would definitely have broken it if he came back for one more year, and Kofi Cockburn would have been in a similar situation to Trayce if he had come back.
Fun stuff. I kinda hope it happens.