I would consider a kill switch. Interrupting the interlock for the brake is my next project. Smash and grabs are hard to prevent, and if they really want it they will tow it.
From what I’ve read the ford sync location/gps is the first thing the pros disable to prevent tracking. And AirTags are kind of a joke. The only useful way to use them is to disable the speaker and then hide it extremely well. But it will tell the nearest phone it’s traveling with them so it kind of defeats the purpose as a “tracker”.
Also if you really want to slow the thief’s down, put your key fob in a faraday bag/box to prevent them from trying to extend/boost your fob.
These are for probably good measures for pro thief’s and not just joyriders.