Wamu
whats-a-matta-u?
If they stay undefeated and all the rest lose 1 , then why not. At last report they were considered FBS teams. If this scenario were to actually take place (unlikely however), then an additional division needs to be recreated. A lot of FCS teams would hold their own against middle of the road Group 5 teams.
I don't think one G5 team could ever make the playoff let alone four.