I thought adds in T10 gained some kind of vulnerability down buff if they stayed too close? Or was it just damage up? I never had the chance to try that out, unfortunately, so I've never paid any mind to what happens in that case.

I think it was discussed/I read it somewhere, but for the life of me I can't remember how that ended: Phlebotomize, is there a certain timeframe for reapplying it early because of impending downtime (like "never reapply if 6 seconds or more")? Is Fracture before leaving a valid alternative to that, not taking into consideration TP issues?