The depot doesn't have enough maintenance bays, and then you got about 16 routes covering about half of queens. I'll admit their maintenance has improved slightly but still not the greatest as the Triboro mentality still lives on. Some of their lines like the Q33, Q47, Q49, Q53 and the Q72 do get ridiculously packed to the door during the rush hours..so they gotta run whatever is available for them to use..there's barely any buses parked at the depot during those hours lol.
The headways tend to be very inconsistent though as a result of having not enough buses to the point CP is loaning theirs.