Dreamer are you new to the Atlantic? Typically the pools are built by each conference sending its top 4 teams based on the last year's final rankings. All the teams in pool-a should be the 1 seeds, etc. Then points are awarded for in-game things. The problem is some teams drop out, or request a move into another pool.
So your comment about not enough of the good 7 or 8 teams is outrageous. Who's missing; who doesn't play?
The current 1-11 are there, 13-15 are there and the 18. Fairfield is unranked, but will be the 1-3 when this whole thing is over so what exactly are you talking about? I think with a few exceptions, there are some very competitive games scheduled. I'd bet you see a few upsets this weekend.
Most teams in a conference play a 3 game set vs each other. So conferences will not play each other here. Most of the better teams play each other 2 or 3 times outside of this showcase anyway.
At the end of the day, other than Regionals, you are not getting 16 of the top 20 teams in the region in one spot at any point in time.