I don't see why graphical modding will present such a difficulty. Although you CAN create many varieties of a skin, it doesn't mean you HAVE to. So if you had a model for an Armored Hoplite from RTW, you could just split up his one texture into 4-5 separate ones that M2TW requires, and your work would end there. You could then add varieties if you WANTED to. Besides, as I think the M2 engine will allow, you can probably share textures/models between units, so that the many different Greek units can share the same muscled cuirass for instance, cutting down the graphical development DRASTICALLY. All in all, we'll just have to wait a few days for all these things to clear out.