Endoperez, I believe you did not get many answers (this post got nominated for "Understatement of the year") because most readers of your post were already seasoned players and frequent forum users: the players least likely to benefit from your proposal. Getting the opinion of the players beginning playing Dominions would be best... but they may be daunted by the sheer scope of the game.
Something I considered setting up was a sort of "training" game, with beginning players and a more seasoned player, who would be able to give pointers and to explain odd things. It could either be a game against the AI (with a few players sharing the same nation, and thinking of strategies), or a small multiplayer game with a nation per player. But the problem is the same as for your own proposal: is there truly any interest? Good question, and I will thank anyone answering it.
Boron, a Wiki was started for Dominions, but very little was written in it. I do not know what was the intended scope of the Dominions Wiki though, but I suspect it is another case of "lack of interest". The Wiki is available
here.