My point is that, there's no need for people to just mod it in when it should just be an option you can choose already. The greatest games made are usually those that give player, the freedom of choice.
I don't think anyone here is arguing than an option for party size is bad. Everyone would want a game that is perfectly tailored for every parameters under the sun. The thing is, balancing a game is an absolute nightmare (I know, I dabbled a bit in it on a personal project). It would require a monumental effort to offer a game that is an fun for parties of 4 or 6. Heck, even WotR, the most praised recent game with a 6 man party has its balance completely broken beyond redemption partly because of it. I can only see modders having enough time to take on this project, Larian has already reported the game multiple times and has most likely no interest in adding this feature.
