For 1, what is the point of having a championship game between your regular season champion and a team that did not win the regular season championship. OK, 12-0 Clemson, you are the regular season champion, now go play 2nd place 8-4 FSU to determine the REAL champion. Yea, I know, the Coastal has produced 6-6 and 7-5 champs. However, they were CHAMPIONS. They won their 7 team division and their fans could wear champion jerseys. So to determine the REAL champ, you had to match the Atlantic Champ with the Coastal Champ. Theoretically, it makes sense.
I am fine with re-doing the divisions, mixing them up, whatever, but I like divisions. For football, it works. For basketball, it doesn't make sense.
Here's an example of how wacky this could be:
Clemson 8-0
NC State 7-1
Pitt 6-2
Lets say NC State lost to Pitt and beat the ACC teams which finished 14th, 13th, 12th, 11th, 10th, 9th, and 8th while Pitt's losses were to Clemson and #4 Miami and their 6 wins were against #2, #5, #6, #7, #8, and #9. A divisionless ACC creates too much opportunity for this type of scheduling imbalance. I'm sure it will never be this extreme but it could get pretty close in some years. With divisions, you basically had a chance to right any wrongs. Yea, it sucks to get that crossover with Clemson but lose that and you still control your own destiny.