Depends on the conference. Not a snowball chance in hell for GT to get into SEC, but there is still a chance to make it into B1G, but not for the normal reasons- maybe #3 on the ACC list.
Does FSU, Miami, or Clemson actually make it into SEC? Or the better question is if they will in 10 years? I don't see it. If they bring enough value to pull their own weight, OK but that's another 10 years not making half what SCAR and UF are raking in, the gap will just widen. It isn't about wins for SEC, it's about $$$, so in 10 years will these brands in small markets bring in enough to not dilute the payouts in the conference? Miami is a good market, but the others aren't. What's their attraction? Good teams? That will always wax and wan, not a good reason to add, IMO.
Besides, looking at the SEC now, I can see absolutely no incentive to expand anywhere/anymore. They are set. If the want more teams, maybe grabbing UNC and UVA. New markets in new areas and UNC is a good acquisition. I throw in a team from Virginia to make it an even number and UVA isn't a bad get either.