Well,
If they succeed to pull something with 'chaos' instead of religion in previous TW, with cities not just rebelling but falling to chaos, it could be interesting.
But if they go on a base of three playable factions or so .... well, it won't interest me.

You could have that, sure. Infiltrating, creating covens of cultists and so on. But what are they going to do without the rampaging hordes of chaos warriors, beast men and daemons flooding from the chaos wastes?

I don't want to see the mighty chaos hordes reduced to the level of the barbarians in Civilisation...

If you want a graphically up-to-date TW; Rome 2 is THE thing to buy. The mods for it are better than the game itself. I've been diggin around searching for mods for my summer playthrough and some of the best depth enhancing mods are in development. Also hoping the make them Wrath of Sparta and Hannibal at the Gates free.