Just do what you people have always done, go with the most historically sound choice. It's a shame that the Spartan is really nice looking, you may have to nerf it, and that could hurt the skinner.

Definately go with what the EB greek historian feels is the most accurate look. If people want pretty units, they already have lots of them. I feel EB greeks and successor states have some of the most beautiful units in the game, or in a mod period. So don't feel guilty about it.