Let's say 2 DT1-users have no inclusions from other DT1-members [...]
Lol

Thanks for point out this
impossible edge-case scenario. Obviously, I did not have something like that in mind. But I believe that some tweaks can be added in order to avoid such situation, if a change would be made.
nutildah also has a point when he says that
meeting the criteria for DT1 (which includes the ability to "vote" via inclusions/exclusions) is a separate status from having DT1 powers.
Probably I did not come up with the best idea but in my mind there is still a contradiction regarding the current state of the system -- meaning the fact that you still have some DT1 powers although you are excluded from DT1...