How much "slop" would you say are in the rules to edge out of the era? For example, Haven't yet played (new to this company of games) I have Band of Brothers. I'm buying the upcoming 'NAM game. How well would the rules /counters work for a modern battle pack? Close enough to give a decent...

Chompin' at the bit, but worth the wait! Haven't been disappointed with any THW games yet with all the different ones I have and play.