Defender_X
Explorer
I watched Naresuan(Thai historical drama) with my wife about two weeks back and since it's set in Ayutthaya, it got me thinking of a SE Asia game. You could have some or all of the PCs be foreign mercs and rulewise, you have to mainly worry about specific monsters and spells. Wouldn't need to have to add any classes from OA, unless one of the characters was a samurai merc. Yes, they had some down there.