Just to update this thread.....
The SingleAge mod has been updated to include the nations from the last upgrade patch. And should also be up to date for the next couple of upgrade patches (Fomoria and Gath)
The discussion on how the mod would work in a big game has of course proven true. Both the pros and cons. Check out the thread on the
Perpetuality game.
The Perpetuality game is using a mod which includes my SingleAge mod, and the Streamers and Standards mod, and a couple of small fixit mods. I would very much like to incorporate the Streamers and Standards mod into this one if it is ever brought up to date in a way that I like.