With the fishing changes, I predict one or two things.
Severe price gouging on fishing gear (already happened) coupled with a severe drop in the price of mainstay fish.
Huge jumps in the commonly farmed craft items, both price and supply wise. (haven't chacked yet to see if this is happening)
A refusal of either crafters or consumers of crafted goods to pay the new prices. (we all know crafters pass on the cost to the buyers, so logically this follows)
Unless there is sharp undercutting on the farmed items, thus making it more and more difficult for people to farm for money and thus shrinking the crafters' prices.
All in all, grats to SE for the changes, they were much needed. Lets just hope this doesn't spiral the other way and get out of control. A server wide depression would really suck. lol