Interesting. You have actually piqued my interest back to Civ V. A few questions if I may.
1) I noticed you stated terraforming. How do you plan on being able to raise/lower terrain? additionally, how do you plan on mimicing the weather effects to coincide with this.
2) How do you plan on interpreting Voice of Planet within your mod?
3) Unit design workshop; This was a huge part of AC, how do you plan on implementing this within the mod?
4) End game, specifically Transcendance VC. What are your plans concerning these?
I'm not trying to be a jerk or anything, I'm actually curious. But some additional info for your mod as to your goals, ideas, member input, Q&A, etc may actually bring some AC fans out of the shadows and perhaps show an improved interest in Civ V.
Perhaps a dedicated sub-thread would ellicit a greater amount of interest and help with your mod. You may even find that if given sufficiant impetus, some of the CIv IV mod community (surprisingly, quite a few of us are able to mod Civ V) may show some interest and offer to help.