When the Broke Promises book have been got to my hands, I was really excited of Cyborg Up. But when I've tried to play I've found It difficult to make a crew as competitive as with Harness on constructs exclusively. I see couple problems:
1) takes Pneumatic Upgrades and Field Mechanic isn't effective enough. It's very expansive and requires too many actions apply all ups, power loop.
2) as I found out at times when the Guild even didn't have a Emissary - Hoffman spend too many cards from a hand, so to attack is necessary as air.
To fix first I decided to limite ups poll to next: Pneumatic Upgrades only and Harness and may be Arcanist Assets/OSA.
To fix second exists couple ways:
Arcanist Assets - you can take Mobile Toolkit that is extremely useful in general and can give to MI action. But I think it better to use it to give to damage to models like Thrall, Dr. Grimwell, Papa Loco, Abuela Ortega, Hoffman.
Emissary's 0 cost up. It gives attack action for models with power loop. It's very strong ability because affect ANY attack action(sh, ca), with it you can use strong shooting crews based on models like Sidir, Papa Loco(especially if give him damage from Mobile Toolkit), Hopkins, Rider. But it require to spend master's AP to loop.
Promises Up on Sidir/Queeg gives to MI and WP duels with and an up. So it works from the box with henchmen/enforces with ups or minions with cyborg up.
So now I'm thinking how to combine this options the best. The most interesting I think Emissary + Papa + Mobile Toolkit and Queeg with Promises + Cisco to buff him + Minions(Thrall/Mounted Guard) + Mobile Toolkit.