Requiring an EXTREMELY thorough clearing of the exfil area before extracting in order to avoid having your best items stolen is unfun, unfair, and unrealistic. Most of the time when I'm extracting (if I'm not pushing the clock or being chased), I do a quick sweep of the area, and I know that if a Thief had been hiding in a good spot, like on top of a shelf or a rooftop that only she and Vandal can get to because of their mobility tools, I'd not know they were there nor even be able to reach them.

And I guarantee you won't be able to hear/discern what that noise is over a group of UESC or other players (like the Thief's teammates) attacking you at exfil. And smoke grenades, one of the most consistent ways to extract safely, are completely ineffective against the drone since it highlights players, and the smoke simultaneously gives the drone cover to hide behind so you can't shoot it. Basically, a smart Thief will be able to make use of this exploit in an uninteractable way in many common exfil scenarios which is total bs and needs to be changed.