I’ve read repeatedly that casters in PF2e are mostly relegated to support roles, i.e. buffing allies, rather than dealing damage. I know that this was an effort on Paizo’s part to deal with the linear fighter/quadratic wizard problem.
But I don’t fully understand why damage spells are considered suboptimal. Is it because casters don’t get access to items that improve their to-hit chances on their spells, the way physical-damage-dealers do with e.g. +1/+2 weapons etc.? Or is there something else in the mechanics of casting damaging spells that I’ve missed, which is a problem?
If the former, would a suitable house-rule be to allow weapon potency runes to affect spells cast while ‘wielding’ the weapon? Or add equivalent runes to the effect of, "while wielding this weapon you gain a +X bonus to your spell attack bonus and spell DC"?