feedback soul

Being on the sorc spell level progression is kind of rough, especially with not getting domains. Understandable if that's tied to the switch for spontaneous casting, though.

The number of spells you can choose per level is surprisingly restrictive on a cleric spellcasting chassis. An FS' 3 level six spells are almost certainly going to go to gsanc, heal, and harm, locking them out of dispels entirely (ignoring scrolls etc). Upping some of their later stuff to a select of 4 might help, or giving them access to an up-leveled but roughly identical dispel to select.

The FS spell list, being cleric minus domain, could use some QOL looking like Shaman got. Breaches, invis, see invis, maybe normal stone skin. Without DS or domain options, they might end up slightly squishy/clearly inferior to the cleric brothers and shaman cousins.

Grabbing death/healing domain on a cleric dip does a
lot to boost FS viability, but I almost feel like it should be part of the class identity without having to take cleric.
To put that together: I doubt the first two points can be altered, but the third almost certainly can, right? More spell choices (and additional slots if at all possible) to make up for the huge loss of customize-ability that domains represented, and a couple defensive tools since they can't get the obvious ones.
As for domains, maybe work them into the class identity thusly: You get a 'domain' determined by your god's major aspect.
War & Destruction: empowered harms
Hearth & Home: Empowered Heals
Trickery & Deceit: (small) passive trickery domain
Knowledge & Invention: (small?) passive... idk, detection bonus?
Nature: Summon boost of some sort?
Magic: Drawing an ol blank for this one.
This would probably necessitate some sort of 'challenge' for swapping your patron, however, so you don't get people trading between gods based on party role for the day.
Edit: having some time to think on it, it would be nice if they had access to bluff, intimidate, etc, since they're cha-base anyway.