The intent of warp farming was to allow people to profit from farming (directly related to the farmer job in the past) while not being able to expand their farm indefinitely and still get paid.
This issues with this, is that the prices meep set would be the original rock bottom when beginning farmer job as a level one, and no one will sell for these prices. I think most people agree, it would be better to let the items rot in a your storage and maybe you can use the farm stuff (unless it's cactus) later for trading or similar. The intent behind /warp farming was good, but no one cared that it destroyed the farmer job.
My suggestion is that a progressive farmer job be added for selling crops. What this means, would be every ten levels of the farmer job, a new shop would open up for people of that level to sell their crops to for more than the normal amount. This would be similar to donor shops in the past (before Eula was being enforced) how only the donors were only able to enter the shops.
There would be five rooms for higher level farmers to use, and the maximum amount for farming would be level 50.
The first room would be the normal /warp farming. Normal prices, any level farmer could use it, simple.
The next level would be for farmers level 10+ and the crops would all be roughly 0.1 higher per crop (I can't check relative prices since authentication servers are down as I'm making this thread)
Then level 20+ would be 0.1 higher per crop than level 10.
30+ 0.1 higher per crop than level 20 (0.3 higher than normal)
40+ 0.1 higher per crop than level 30 (0.4 higher than normal)
50+ 0.3 per carrot and potato (because you get 3 per crop on average) 0.3 per wheat 0.2 per seeds 1 per potato 1 per melon block 0.3 per cocoa bean 0.75 per cactus 0.3 per beetroot 0.3 per beetroot seed
On average, the 50+ level shop should be about 1 meeble per crop break that would be sold back to the server.
I apologize if 10-40 level shops are confusing, not being able to see the prices made this a hard thread to create atm. (I'm thinking per 16 crops it goes up 3.2 meebles per level on top of the original maybe, so carrots would be 16 meebles for 16 carrots by the level 50+ shop)