I've seen a mod like that tried before. It doesn't turn out too pretty. The problem with mashing so many factions onto the map at once is all of the variables that take place at any given time. For something like that to work you'd need to have a type of alliance/war system put in place for players as well as the other factions. I believe the Diplomacy mod people are currently working on something of that nature. With that implementation then it may be possible to pull off. As for a new map though, the problem with that is the same problem that has always plagued map makers in Mount&Blade. The map's size is hardcoded. You can't make it any bigger or smaller, so you have a very limited amount of room to work with. It might look big now with only 6 factions on the map and you might say things like, "well theres plenty of open space here to put stuff" Yes in some cases that is true, however you can only do that so many times before it all becomes one big cluster****.
In any event, map making was the other section I planned on going into with the quest coding I'm currently learning. I'm somewhat hesitant because of the limitations of it, but i'll take a look at it and decide for sure. If I choose to go into it, I'll work on a map for you. I'll just need to know how many Towns/Villages/Castles you plan on having. If you implement the Watch Tower and Fort options from other mods, those could be placed on there as well. However those would need new scenes made with them for battles and visiting.
