Considering that a Warhammer Total War game would feature magic, monsters and flying units, I think they'd need a new engine; if not just tweak their current one a LOT.

Personally I'd love to see a TW: Warhammer. They've done a lot of historical games up to this point, and covered all the most interesting historical epochs up until the 19th century, with the exception of the Renaissance.

But more importantly, Warhammer has some really unique factions and rosters, something I think could make for very interesting gameplay.


Though I also have a feeling CA would be hesitant to make such a big investment in an unexplored territory(fantasy), considering that most of their fanbase are more interested in history. Though who am I to say their ways, considering that they have also prioritized ratings and metacritics higher than the actual gameplay?