OK, just to play devil's advocate...
The main argument against this system is that it's just not that economically feasible for many programs.
For most teams, you will have to spend money to travel to regionals. Then, if you're not lucky enough to finish in first place (and even if your team does finish in first place, in order to get a second bid), you have to spend more money to travel to the super regional. Then again, if you are able to finish in the top 10 in the division, then you will have to spend even more money to send your team to the National Championship tournament.
Additionally, this system gives a substantial advantage to those programs that can afford to send multiple teams to multiple regionals, as a way to bypass the super regional and send more than one team directly to gold. This will create an incentive for teams to not host regionals, as it is difficult to plan a regional and travel to multiple regionals in a matter of weeks.
And what happens if three teams from a given program finish in first place in a regional? Which of those three second place teams will take their place?
That being said, this does seem that this is the best way to ensure the best field for the championship tournament. And with the number of teams rapidly increasing, this system is inevitable. However, in the immediate future (and even under this system), I think AMTA should focus on eliminating the imbalance of power from region to region.