LTW may not be as good as others, but as others have said, it's not bad for getting BC3s from dungeons. Run dungeons that drop i70-i80 desynthable loot (Crystal Tower 1, the 2.2 dungeons, etc), and start working on more interesting desynth classes.

I'm guessing that at some point, they'll make the Ixali smithing gloves desynthable, and then they'll become a decent way to get Mastercrafts. Then, LTW desynth won't be so terrible.