It would be nice if Sentry mode activated at least the music/noise and the screen notice for AP2 and lower cars, even if they are not capable of recording Video. At first glance, an AP2 car looks exactly the same as an AP2.5 car, car burglars would not know the difference and It could help serve as a deterrent.
I think it's more about the processing power to chew through the camera feeds and find things than it is the ability to record video - AP2.5 went to a more capable water cooled processor, right?
Without that running analysis on the camera inputs continuously, AP2 won't know when to trigger the alerts...