DBs aren't time-limited for GMS.

I wonder why they say, "it is not required that you level up a DB character!" What about 3rd job? It requires level 20 Slash Storm for Bloody Storm.

In them saying "But don't worry, it is not required that you level up a DB character! If you want to, though, you can check out our surveys," they're basically saying this class requires NX.
Fail.
I was also thinking about that problem with Bloody Storm. Oh well.