I think two more would be enough. The only question is do you want to add a St. Louis and Richmond (for example) combo that adds solid basketball programs but further increases the side of the middle of the league, or do you want to add maybe Duquesne and Detroit that may not be basketball powers but do add sizable markets as well as wins for the bubble teams?

The A-10 is probably going to get 5-6 bids and I would be surprised if we got more than they did. The reason is the bad teams that give easy victories. The same goes with the AAC. People perceive that league to be stronger than the Big East, but it is basically 5 pretty good teams and 5 miserably bad ones. I think if you put any of the top-7 Big East teams in the A-10 they would be a top-35 RPI team, in the top 3 of the conference, and a lock for the tourney. Honestly, even Seton Hall might contend there. In the AAC, swap any top-7 Big East team for any top-5 AAC team and they'd be a tourney lock as well.

Adding 2 more highly competitive teams could just mean you have 6-7 bubble teams in the future instead of 4-5. Adding 2 weaker teams, on the other hand, would likely solidify those bubble teams as tourney teams. Might seem counter-intuitive, but I do think it would be worth it for the league to look into.