I just went from lurker to registered just for this thread!
Anyhow, I didnt read the entirety of the thread because it's so long!,
However, I was wondering, did youe ver consider switcing out one or two defenders fo peace bringers?
PBs get 20% bonus damage per defender. If they have assault as well, the drop from def bonus should be mitigated somewhat and you would have human form death dealers with something like +240% damage unenhanced!
Thought it may be a good idea since your setup seems to be invinvibility and you can afford to lose a buff or two. The extra damage should make everything even faster.