Given they are dumping both the coach and the AD (who may have been dumped because he wouldn't dump the football coach), indicates they may be wanting more than what they are getting for their money which is perhaps a good sign. On the other hand, Nebraska ponied up big bucks to get Frost who could have gone anywhere.
It is at best a 2nd tier program in the ACC which isn't saying much given the ACC. With no division titles to chase, they would have to be lucky to get into a New Year's day bowl.
1) GT actually has academic standards which means they won't take any Tom, Dick or Harry. Perhaps not as limiting as ND or Stanford but there are standards.
2) Being in the heart of the south means they compete with virtually every other Power 5 School that recruits the area. They are unlikely to win many of those battles.
3) The portal is a two-way street for schools like GT. Getting guys in didn't help the former coach very much, did it? At the same time, he lost a number of solid players (i.e., RB who went to Alabama) to the portal.