I was digging through the LUA files the other day, and I noticed something about the data for priests.
When you are healed by priest idols, there is a debuff that is applied that prevents you from being healed by that type of priest for 7.95 seconds. This means that only one of the two priests can heal a single target every 7.95 seconds. However, priests can heal every 5 seconds, as long as there is a target without a debuff.
The interesting thing about the debuff is that it is different for each priests idol. If two generals are on a team, they could buy different priest idols swap one priest with each other and almost *double* their healing. Doing this with high priest and bishop minions would result in 28% healing every 7.95 seconds, instead of 13%/15%!
Adding in Sedna's healing wind II would bring her healing power to 41% every 7.95 seconds! This would make her even more powerful than before the priest typo. Sure, both generals would have to micro both sides of the map, but for double healing, I would say that it is worth it.