If implement your proposals then what will difference between DT1 and DT2? If a DT2 can't include you DT2 then how he will exclude you. And if DT2 voting is enough to become DT2 then what is the necessary of DT1 system. DT2 controlled by DT1, so if anyone from there make some stupid then ask DT1 to exclude him. Is it not simple? On current system you will no longer in DT network if you made something stupid. If you give exclusion/inclusion power to DT2 then who will prevent abuse. Even you will find some DT1 who have used sockpuppets to become DT1.  Perhaps a war will start if you DT2 network when they will get exclusion/inclusion power. Let it run as usual same like current system.