I'm happy for people to discuss ideas for mods in the General forum, as I said here, so I'll leave it here for the moment. If Coldfish ever wants to start it properly then I'll move it over at his request, or alternatively he can start a new thread with his design concepts properly laid out.

Coldfish and anyone else thinking of starting mods, you may find the following threads of interest:
https://forums.totalwar.org/vb/showthread.php?t=35969
https://forums.totalwar.org/vb/showthread.php?t=49609
https://forums.totalwar.org/vb/showthread.php?t=49506
.