Ugh. But it isn't balanced for 4. It's ONLY balanced for 4 because of nerfing. That's the problem. They've nerfed EVERYTHING to MAKE it party size 4.
It's like saying, "Here's the rules to chess. Now, play chess."
"Wait! We're changing the rules because chess is too hard. So, knights can move in an "L" shape but also can teleport to the other side of the board in any random location. Oh, and rooks can move in "L" shapes too. Oh, and kings can also move anywhere, like queens. Pawns seemed lame, so we decided to let them move in any direction."