You can still forage for salt. The deposits are a nice addition too, because some of the types of salt can be more rare (and desirable) but sitting around hacking at a deposit all day long has middling results.
I find the danger inherent with jobs that require you to be outside of the city -- Salting can lead to interaction, be it with PC or NPC threats, as well as the threat of dehydration, weather conditions, and so on.
Spice sifting is similarly very dangerous, unless you are a Mul. And if you're a Mul that's a warrior without direction sense, you will get fucked one day by a storm. Beetles, storms...It's a very Zalanthan job. In fact, the hopelessness of finding 150 grains to turn in is like...The epitome of ArmageddonMUD to me. I love playing a Red Stormer for that very reason. You feel like the bottom end cog, and when you see people sniffing pinches or smoking you're like...Fuck me.
Clay/Cotton/Dung Sweeping and Picking...The mindless aspect of this is what drives me away from pursuing these jobs as an Indy. The lack of chance interaction or danger turns it into a grind. The only recommendation i'd have here is to put the locations of these sites in contentious areas -- Not necessarily inside of the Labyrinth, but perhaps near it? Or to have areas rotate, or chances of finding/pulling up little nasty NPCs.
As to new jobs, i'd just like to see Caravans. Automated wagons, with the OOC caveat that PC Raiders understand they can't steal the wagons (it's just too game breaking, let's just say the locks are impossible to pick and the doors impossible to break down). They can however hold a wagon up, and rob the people inside if it is poorly guarded. Let's say there's always a pair of beefy NPC guards, and they're sentinel so they can't just be shot at from outside the wagon.
Creating a dynamic series of jobs -- People can be hired to guard the Caravan (with a maximum quota of say three PCs). People can pay for passage, either in the lower deck or higher deck (depending on their money, or even on their status (if they are a part of a House or GMH). People can be hired to be a server (more on this below).
Caravans leave twice a RL day, once in the EST morning and once in the EST evening, to start, it goes from Allanak to Luirs, Luirs to Morins, Morins to Luirs, and Luirs to Allanak. See if this works, if so, maybe offer smaller caravan choices to Blackwing and Cenyr, more dangerous.
People have been curious as to a PC job as a server at a tavern. My thought is -- What if a PC (one PC at a time) could be hired by the Bartender to help them tend bar. They would then for all intents and purposes become an animated NPC -- They would become the Shop List for the tavern, so when people come in and type 'list', it has this PC serving for the bar. All of the money goes to the actual Bartender NPC. You can't leave the bar without ending your shift.
If people try to list from the bartender, they say they're too busy and to ask 'sdesc' over there'. It would be a timed shift (say a RL hour), and the PC could end the shift by typing 'end shift'. At the end of their shift, the bartender gives them a flat % of the objects they sold, with a minimum (say 50 coins). So a popular server at a tavern could bring in more money by having their friends come by and buy drinks (realistic) or on a slow night, they make the minimum and call it a day. Maybe the minimum can't be reached unless you do the whole shift.
Perhaps status comes into effect -- You can't serve a shift at Red's Retreat unless you're a member of the Atrium, or someone of at least a modicum of status. But you can do a shift at the Gaj, even if you're a Bynner. You can't serve a shift at the Folley unless you're a member of the Guild. You can't serve a shift at the elf bar, unless you are an elf, etc.