Let's see what happens when people start using AoP/DD + Prisoner
Prisoner passive as it is needs to go from PVP. Change it for siege next update, rewrite it, and replace it with something equivalent of other lv5 toons.
Siege needs to work on Prisoners teams. Otherwise no defense really stands a chance for top guys with Prisoners.
A green talisman that would multiple effect of other talismans x 2 would also work perhaps...