I agree with both of your points. I greatly enjoyed Punchliner Comedy clubs on Liberty and on the Breeze. I did find one comedian, on the Liberty, too vulgar even for me. If you knew me you would know that it has to be pretty vulgar to bother me.
The Comedy Brunch is nothing really too special. It does pull more people from the Lido on Sea Days and that helps the congestion. I have gone to the brunch twice and the first was just as you described. Standard breakfast menu and five minutes of mediocre comedy. The second time, on Breeze, I found nothing I wanted to eat and we left.
Some people like it but I would prefer either a full brunch atmosphere or a standard dining room breakfast.