List what would make this game "perfect"

[Akumu]

1) Challenging Material that is not soloable
2) Challenging Material that is Soloable
3) Something that makes the player base party throughout the game, so I can play outside LS event time.
4) Content that requires me to work for something
5) Enough content where it takes me over 5yrs to complete the game

If they can accomplish these 5 things, the game will be perfect.

That says it all for me perfectly. No point in writing the same thing.