Fishers already have no use for GP, so the tackle box could compensate for having a bunch of jewelry with useless stats by adding a bit of perception and gathering. Heck even if it provided no stats at all, the benefits would be worth it regardless. There could be special crafted tackle boxes (moogle, carby, ruda, oh my!) that would give bonuses during certain weather events or when fishing in certain places. That is going a little too far i know because then you could fill a la noscea box with bait for that area and passives and instead of bait taking up space in your inventory you would have tackle boxes for each section of eorzea you would want to fish in, but its thinking.
