I'm not sure what your law enforcement training taught you, or even what might be a trend throughout other curriculums...but mine taught me that drawing a firearm on felony stops is for officer safety so that you're minimizing being behind the 8-ball incase someone wants to fight it out. It's not for compliance. Indeed, we were even taught that drawing a firearm early strictly as a form of compliance is a generally bad idea.
Even if we had drones to conduct stops, a felony stop would still be correctly performed by drawing your firearm and methodically removing the occupants of the vehicle at gunpoint. People can still shoot you through your windshield when you pull up behind them.
Were you taught in the academy or follow-on training that drawing your firearm on felony stops was for compliance as opposed to officer safety?