This doesn't need to happen right away, but at some point during the beta I would like the option to create a customized tactical battle. Anywhere from placing obstacles on the terrain to giving each unit the most rediculous gear/traits. You could let us assign levels, or simply introduce unit combinations that you want looked into for balance purposes.

While there are a lot of things that still need balancing (such as pacing), roughing out the edges of some of the same-tech same-level unit strengths against each other with an 'instant-combat' system would go immensely faster than waiting for the AI to field a (potentially ill-equipped) army against us.