I wish that in Dominions 3, players will be able to answer questions about game mechanics simply by playing the game.
Whenever the devs read this forum and see players asking a question about game mechanics, the devs should think "Could dominions be changed so that the player answered that question by playing the game instead of by asking the forum?". For example, I just posted some questions about Communion:
more communion questions
The question about where the fatigue goes can be answered by playing the game, pausing after a spell is cast, and examining which mages got increased fatigue. The question about how much of a boost is given cannot, because the communion boost is not visible in the game.
If the communion boost were visible to the user, then that question too could be answered this way.
(P.S. I could infer the boost level by summing the aggregate fatigue imposed, subtracting the fixed spell-casting encumbrance of each mage, and then figuring out how much of a boost would have reduced the fatigue to that number, but this doesn't count as being "visible".)
P.S. Adding the facts to the manual isn't a good solution. It would be too huge, and it would be too hard to find what you want to know in the manual, and anyway I don't want to spend my time reading a tome of rules, I want to spend my time playing.