Well, the talisman is useless on the grey seer as the screaming bell already provides a 4+ ward save. I would use the points you dropped there to up the priest's ward save to a 5+. Also, I would drop all the close combat bonuses on the grey seer. It may seem like a good idea, but in CC all your seer should be doing is scurrying higher on the bell not trying to kill anything. With the points you saved you could either increase the size of the PM unit, or give one of the engineers a condenser or doomrocket. Other than that, looks like a pretty solid list.