For the Hand of Immolation and Eruption of Flames actions, are the pyre markers dropped still 50mm hazardous (burning) or are they just 30mm pyre markers since the actions in question don't specify that?
While I've not played Ulix yet (he is my lock down project) the main thing you will want are;
Mudlight Whispers Haulers (healing) & Whisperers (obey)
Making Bacon Sow & Piglets (summoning)
War pigs (charge!)
I don't think Squealers are vital but can provide some ranged options for the crew.
As mentioned above Gracie and the Emissary are useful to have and if they work well with Tricksy you may want to put them at a higher priority