We are in dire need of a new f2p spice building. My suggestion would be to make it similar to the frontier butcher, but for spice demand. Since the greenhouse is currently balanced jobs it could be more Heavy XP related jobs.
“He who controls the spice, controls Ateria”. -Lt. Morgan (Probably)
https://tenor.com/view/dune-dune-part-2-sand-hand-gurney-hallek-gif-17685161942647176780