Seriously I'm laughing with this "4 is standard". There are not many more cRPG with party of 4 than with party of 5 or 6.
This is a very bad argument.
Anyway I don't have to read all this thread to know that I fully agree with OP.
Give us a party of 6 please ! (Or at least 5...)
More character = more action / turn More character = more variety in party composition More character = more interactions in dialogs More character = more synergies on combats More character = more story / quests More character = more customization ...