Oh my God, I'm going to agree with P7!!!
I also do not bother to ask for 2 minutes for DVR/DETs....
Also, I reckon that 70-80% of the time if Air Deps asks to go early on a jet behind a F50 or ATR, then the answer will be "I'll call you back with a release"....and the release comes AFTER the four minutes, when we could have launched anyway.
That's my experience, and why I no longer make that call.
AC2, can I assume that you work TC NE?