No we won't get better super committees by taking all elected people off of them. Beware of technocrats leading us further and further away from democracy.
The base closing commission was a unique thing for a unique situation. Everybody wanted to close some bases, but no politician wanted to be responsible for closing bases in their states. Nothing else is similar to that.
Stop advocating for politicians to find ways to remove democratic accountability. In our system they already have enough ways of doing that.