gold saucerrequires completion of hildebrand quest line.

[Risvertasashi]

Complete a fun quest series with some fun fights to unlock a fun place.
I see no problems.

Well, it locks out people who aren't level 50 yet, and those that just do 50 now need enough hours of questing (and queuing dead fights) it could easily take them several days.

Depends on how accessible Square wants the place to be, really.