Im watching some more gameplay, and the game looks a lot more fun when attackers dont know where the objective is.
When they use drones, they just zero in on the location and it's over quickly.
But when they dont know where the objective is, they are entering homes very carefully, using drones to check for tripwires, clearing rooms together and sometimes taking risks to manage the timer.
I personally dislike the whole drone phase, but I like drones being used within the action phase itself.
I'm guessing that they wont remove the phase, just because there are some operators who can scramble drones.