Blocking apps and OTA topic

I am going to experiment blocking various apps via adb to see if I could gain a bit of performance and clean up what's running in the background. I was wondering what would happen if an OTA came through while these were blocked. I wouldn't be facing a chance of brick would I? Apps I had in mind were like the kindle app and audio books.

I'm using apex launcher so I'm not worried about potential effects on the default launcher, although now that I think about it I may be worried about the defualt launchers ability to update with an OTA as well.