Good luck
Seriously, I love the idea of a good scouting algorithm, but they'll almost certainly not end up working like you think they should. It's just as good to turn scouts off, but use a 1-10 or 2-8 scale for ratings (and talent changes at least at default, or higher to taste). That way you still get a nice "fog of war" and you don't have to deal with all the strangeness of the scouting algorithms.