But if 1 person the DT list went out of their way to leave negative feedback on lets say, 100 members in active signature campaigns than this would make them be kicked out of such said campaign because 99% of them do not allow "red" members to participate. But if the "red" is not clearly justified and this is all done in one day, I think issues would arise for such DT member
I think the idea to go after managers is better as its their job to do something about the spammers they ban as much as its the moderators.
Indeed. Going after managers or services themselves is bound to be more effective than playing whack-a-mole with people who own 5-10 (if not more) accounts. This still comes back to the question whether it is appropriate usage for DT and whether we should do it or not. An organized effort between several DT members could swiftly deal with this problem.