I think it will take care of itself.
Virginia (7-3): Plays Liberty this week then Virginia Tech, both at home. Likely finish is 9-3 and Coastal Champion. That will rank them.
There are 3 other Coastal teams with 6 wins who play each other and some other easy opponents mixed in. It is extremely likely that 1 of them will finish at minimum 8-4 and probably a 50/50 chance 1 of them finishes at 9-3 as well. That will rank them.
Despite how everyone likes to crap on the Coastal, we have a good chance at 6 of the 7 of us going to bowl games. Meanwhile, its a disaster in the Atlantic, with only 1 team other than Clemson having a winning record - Wake Forest. Wake doesn't have a single win all year against a team with a winning record, LOL, but they are 7-2. After losing to Clemson this week by 30 points they finish with Duke and Syracuse. So probably a coin flip they go 9-3 too.
Last year, 13 of the 25 ranked teams after week 12 had 3 or more losses...including 4 teams with 4 losses.
If I had to guess what the regular season would end with, I'd say Clemson will be 12-0 and ranked #3. Virginia and 1 other team will be 9-3. Virginia will be ranked just under #20 and the other will be ranked just over #20.