I see a problem with gear progression, then again I always have since Mythology is stupid.
To gear a new Job in iLv80 completely, it'll take at least five weeks, assuming luck is on your side and you don't have terrible runs/bad loot dropping (you're gearing Monk, the only thing that you ever see drop in Crystal Tower all week is Dragoon).
During those five weeks, you can obtain iLv90 for one Job from Coil, again assuming luck is on your side. You can also 2250/3175 Mythology for fully gearing (visible gear) another Job in iLv90.
So basically, if we say most people have one Job in or around iLv90 right now, with Crystal Tower they'll either be gearing purely for vanity, or to seriously gear just two or three Jobs, since the rest can be geared with Coil/Mythology at the same time. What it comes down to is that the rate you progress iLv90 is faster than the rate you progress iLv80, and that is fundamentally stupid.
Honestly, I think it should be a three day lockout. To me, that seems balanced, also Crystal Tower is from Final Fantasy III so they should be playing to the number three as much as possible.