ARR class progression

[Nakiamiie]

There is no fun in an exp party if you get your level up in 1 hour or less.

I disagree greatly.
If it takes more than an hour for a single level in an exp party, there is a problem.
Again, it's a game not a job for me. My fun isn't grinding forever to earn 1 level.
It also means that it would be damn near impossible to get your level without an exp party if it requires several hours with an exp party. Thus, an hour for a level with an exp party is long enough.