So I'm feeling quite good about Kailasa and LA Ulm being reasonably good copies now. I would appreciate any tips about how to remove pretenders from a nation choice as that is currently the only known bug... maybe we can call it a feature

Would very much appreciate testing and bug finding.
I think I can do new nations in about 30 minutes to an hour now that I have the hang of it. It's a lot of reference jumping, between the manual, the game, the database, and various other mods and posts. Also there isn't support for dominion effects yet which will take a little more time to implement when I get to a nation with it. Kailasa and LA Ulm don't have any right?
If people would like to start more multi same-nation games I currently have energy to do up the nations before the game. This offer expires in two weeks as I will be quite busy then till next winter. These games don't have to be limited to just one nation. You could 3 of one and 5 of another and 4 of another. Could do Era wars or something EA -vs MA -vs- LA of a given nation...