Per DWierd's instructions and nerdwerd's suggestion, here's what I might do to the Abacus.
A starting Abacus gets Businessman and 1 other move.
Businessman: as per Moonlighting (with 2-juggling and gigs as defined by your Network) but every time you roll, pay Upkeep. If you don't, pick one vulnerability which is most pressing (rather than just extant). If you miss two payments in a row, well, I guess they're all "most pressing."
note: Some of the vulnerabilities take a little mental massaging to fit in the context of a Network (rather than a gang, hardhold, or followers), but only a little. As usual you have a vulnerability go off twice, it's extra fucking true (also, if your people are idle or deserting, who's working your gigs, your own sweet self?).
Network
By default, your network is a loose-knit group of castaways and cutouts. Upkeep 1-barter, +desertion.
Choose 2 for your bread-and-butter and day-to-day.
You've got a rare contact (Milk) for something luxe or rare, like weapons, drugs, or transportation. +Making Deliveries (1-barter/bushwhacked).
You've got two no-nonsense enforcers (Vega and Ezekiel). +Enforcement (1-barter/overthrown).
You've got an understanding with the local warlord (Jonathan) that you're the gatekeeper of something necessary, like food, medicine, or gear. +Honest Work (1-barter/impoverished).
You've got a front or a patsy (Quentin). +Making Deals (1-barter/shut out).
You've got cachet and an envoy (Trigger) with the distant looming threat (Greer's gang). +Raiding (1-barter/embattled).
Your network is loyal (or maybe they just have nowhere else to go). If aren't paying them, though, they still need to eat. -Desertion, +Idle.
Your people are the best, and they know it, the bastards. Take +1 ongoing to Businessman, Upkeep +1-barter.
Your people are the dregs and the desperate, but you only have to pay for what you get. Take -1 ongoing to Businessman, Upkeep -1-barter.
Choose 1 for your big earners (who else wants in?):
A real whiz, maybe a mechanic (Grass) or a sawbones (Key). +Technical work (2-barter/Shut Out).
A pimp or madame (Dust) and their primo tail (Grace, June, Frost). +Fucking (2-barter/entangled).
A no-nonsense tracker (Jaim) and their sharp-eyed, long-rifled gang. +Compound defense (2-barter/inflitrated).
Some slick hired killers (Cloud and Feather). +Doing Murders (3-barter/embattled), +Reprisals.
Choose 1 for your problems (or Choose 2 and +1 juggling if your ambition exceeds your resources):
You owe a shark (Mercer – for startup costs, recent expansion, expensive tastes?) and they aren't patient about it. +Paying debts (you keep up with them/they come due).
You didn't get where you are without seriously pissing off someone connected (or pissing off someone seriously connected – either way, it's Chack). +Avoiding someone (you keep well clear/they catch you in a bad spot).
You rely heavily on following or appearing to follow a code when you do business (what is it?). +Maintaining your honor (you keep your word and your name/you cross a line).
Choose 1 for your people's totally manageable shortcomings:
They're always ready to ditch for greener pastures. +desertion
They regard you as the lynchpin. +judgement
They have other shit that takes precedence if you aren't paying. +idle
They're assholes. +reprisals
They have seriously split loyalties (or at least someone thinks they should). +obligation.