Due to us getting deep into the fight every time and the limited amount of experiment time I had work with (probably 3 sets) I only got to test my targeting change. Hardwiring didn't do anything, by the by.
It had an extremely minimal effect, my success rate went from maybe 98% to 98.5%, and the rate at which I tag the add without it moving remained the same. I haven't had a chance to try using Flash on the adds, but on one particular add the WHM used Cure3 with Medica II going, and a single Skull Sunder was NOT enough to take hate. I had to Tomahawk to get it. So I'm thinking that with Flash being less enmity than a combo'd SS, you are in dangerous territory. I will test further on Sunday, since we didn't clear (uhg, less than 1% on 3 separate pulls).
