He is kind of a death ball. I see most people going Hoffman, Guardian, Peacekeeper, Maincal Attendant and maybe Ryle. Just staying in power loop because then everything is DF, WP, MI, SH, and CA 6 or better with some here and there. Also a lot of healing from Hoffman with Arcanist Assets and Field Mechanic plays and even some from Ryle. I think Hunters are kind of Meh there combo is so specific that is almost impossible to pull off if the other player has any idea what they do. Also they are DF 5 on 50mm with only armor +1 so they get swarmed easy I had 1 killed by 2 Gremlins. He is super activation depend so watch your self and expect a lot of hoffmans actions to be casing power loop.
Here is a list I have used 2 times
Hoffman
+Arcanist Assets
+Field Mechanic
+On Site Assimilation
Maincal Attendant
Ryle
Peacekeeper
Guardian
2 x Hunters
the good thing about this this list is the main ball can be a huge pain in the ass and be just control the board.
The bad fairly immobile once it gets set in direction and poor flank control and not a lot of shooting
The main things I would say that did not work was the Hunters they are just not that great for objective running not for 7ss and when the guild still has Hounds.
Like once you take the big ball you really want models that can do everything by themself like the Pale rider, Wastrels, Guild Riflemen, or Guild Hounds.
Even stuff like Guild Lawyers give some great utility by giving Hard to Wound and Fees debuff.
I have been meaning to try him with a Warden they are great at 6ss.
I hope my rambling help in anyway.