I still don't get it why combat should take multiple turns. As we are talking of galactic space and time scales.
And you are going for an Age of Wonders vibe with multiple tiles? Again, why? As we are again in galactic space and time scales. Is it really needed to complicate battle in this way instead of giving more direct influence in the actual combat? I still auto resolve minor battles in Age of Wonders, Space Empires or Stars in Shadow, but major confrontations are a blast to participate. It's especially strange, as you have some powerful options with Sins of a Solar Empire or Ashes of the Singularity with very strong RTS Combat. Just make it faster, not so sluggish like Sins, and you would have a big winner. I found the combination of TBS and RTS Combat works well. Like in Sword of the Stars or Space Empires 5.
And yes yes, I'm aware, different engines. But I was really hoping you would combine one or another to boost GalCiv into the next age and make it more appealing for a wider fanbase.