Well, for the next version (which I hope will be out by Monday), we are including
Regiments - It is in currently and has undergone testing. Many Scale Tweaks have been made, but otherwise it functions great. Keep in mind this is simply the Regiments portion of that mod I was pointed to.
Dale's Combat Mod V1.3 - I here this will be out this weekend. So I will incorporate it ASAP once it is released.
BUG - Taking Avain's advise I looked at this one again and am contemplating including it.
I am also taking a look at influence driven war. The more I do with this stuff the more I learn, so I will be willing to incorporate more mods
One thing I did notice though... Regiments plus stack attack is quite the graphical show... I had a stack of about 15 Units go against one of similar size... very interesting. Might not be for weaker computers.
EDIT*
I have also decided now that in order to keep this an "Enhancement" on core gameplay as opposed to replacing core gameplay I will avoid mods that add new *many* new units (Some do have a place), New Techs (Once again, expceptions can be made) or other features that essentially make it a "different" game.
I feel the mods I have incorporated so far take the Core Gameplay and enhance upon it while remaining true to it. With Revolutions and Some Combat Changes being the greatest changes.
In saying that, Like I said above, the mods I am looking at adding are Regiments (already in my test version), BUG, and Influence driven war.
I am also looking at Civilization additions that hold true to the current Formula for Civs, (1 UU, 1 UB, ect).