Crystal Tower Loot Lock Out how long?

[Djeserit]

Not everyone is okay with paying $10-$15 to play for 2-3 hours a week for a month because they literally can't progress due to a physical restriction set in place by the game developers.

You must be the kind of person that likes to be limited to gain an artificial feeling of longevity.

I think you mean figuratively, because you can progress just fine on alt classes. Maybe not to i90 gear, but you can still do other non end-game things.

That is, unless you have every class at 50, all combat in full DL, all relic +1, all crafters/gatherers in overmelded HQ class gear. If you have all that, and every achievement (which you don't) then you still have options. You just make a choice to focus on only 1 aspect of the game.

Edit:

Lets do this by numbers. There's 6 different sets of gear that will drop, each containing 12 pieces at most.

6*12 = 72 pieces of gear

They want CT to last approximately 3 months, or ~90 days, until patch 2.2 comes out and gives us more "true endgame".

... 1 piece every 30 hours.

The shortest logical cooldown on CT gear would be 30 hours. It will most likely be 36 or 48. Possibly even longer because they don't expect (or want) anyone to farm all 6 sets in 3 months.

However we know there's only 4-5 bosses, per what Yoshi said in the Live Letter.

72 pieces of gear / 4 bosses = 18 items in each bosses loot pool

That's not going to happen.

Now, let's flip it to the conservative side, and say 5 pieces per set (the visible, non-weapon slots).

30 pieces of gear total, 2160/30 = 1 piece every 72 hours.

This number is much more logical (and more likely), but I would say anywhere between 36-72 hour lockout on gear is acceptable.