I would like to see you design something that's clean and can be used as a stamp. there's two concepts I would like to see you explore.
1) I like your pitch by pitch logo too. perhaps you can make a Gamba logo that almost look like a semi-vintage seal, almost like a fraternity style seal with a. Maybe there's a column in the middle, of the seal
2) No one has quite explored the small business or Philly component to this competition. maybe have a contour of small businesses.
The logo is for a business association. It has to either convey storefronts or have more of a philly theme to it no liberty bell though.
Here's some inspiration if I didn't write that clear enough.
http://3.bp.blogspot.com/-9rPgLtFyUM0/T9cn30PhfUI/AAAAAAAAITI/kp1TilJBLtM/s1600/5.pnghttps://s-media-cache-ak0.pinimg.com/236x/86/13/6c/86136c9a872598b38d67b78b1b00e668.jpg