I think this will be fun to playtest. Like the idea of BLU attacking. You probably need to mark the BLU capture area with the "Capture Zone" overlay just to make sure everyone on BLU knows where to take intel. Also I dropped down in a small hole in one part and thought I was stuck....it looks like you should be able to run right thru the door but you need to crouch....maybe just raise that doorway a bit.
Do the teams change after one wins?
I didn't notice any obvious broken things.
I think this is a very cool beginning...submit for next gameday(whenever that is.)