Should they make the game for ten? If you only want to play six, you don't have to play all ten.
Maybe they should make the game for twenty?
Thirty?
Could you give me a couple of examples of people asking for more than 6 members in a party?
Also, I wonder if you could enlighten us as to why most people seem to mention 6 as the number they like. Do you suppose it's just a random number that people selected?