your system seems to be getting more complicated and still didn't address the issue Darjelo raised about someone who did make and effort on one team and then gave up with zero offensive banners.
Anyways, whatever kicking out mechanism is in place it's clearly not working as you think it is. I've won plenty of GA matches on my alt account I didn't have time to take part in via the tried and tested auto deploy followed by having a higher GP method. Once I even got into the 2nd to 4th prize bracket by not taking part for a whole GA round. (not proud of it but it's a second account I play a bit now and then when I have the time and there's lots of casual players at the level of that account that don't take part in GA on a regular basis).