It's a good idea. We'll definitely consider it.
I love seeing that this is still on the (potential) back-burner!
My view is basically that the combat engine has gotten polished to a pretty high degree, and you lot have gotten lots of experience at developing combat situations that work well for it. Given how much work went into the combat and how much fun it can be (especially with a few controllable characters, I hope), it would seem a shame not to give that a game in its own right, even if it only had 4-5 hours of gameplay.