Blasphemous
Graulich
Well, you can color code the background for the civs that already have a rating, and just leave a blank background for those that don't. Better than nothing, I think. You can update the ratings with every patch... And we can always just decide by concensus on the difficulty of civs that don't have a strat guide. We should only leave blank the ones which not enough of us have played to judge.