P5 and G5 don't exactly translate to basketball well but I get your point. I would say the last quality out of state non conference team to come to the Dome was UCSB 2 years ago. That is a team that won the Big West last year and went to the tournament as a 12 seed and almost pulled off the classic 12-5 upset against Creighton. The year before (when we played them) they were 2nd in the Big West before the tournament was cancelled due to Covid.
That was actually the year we "bought" 2 decent non conference games. The problem is UCSB on the schedule doesn't move the needle with the average fan and does nothing to drive up attendance for an early non conference game.
As far as as "P5" level team you would have to have to go back 15 years now to Tennessee, which was the last time we did a 2 for 1.