If they are, Potions for their enhanced price could give a bonus to resonance rolls in terms of either roll twice, take better; or a flat bonus to the Resonance failure check.
This would allow for potions to have a bit more reach without breaking the system entirely exchanging CLW wand spam for Bag of Holding with CLW potion spam.
Based on complaints? It seems like mainly potions at the moment. I did quite like one suggestion I saw where potions have a small effect without resonance and full effect with. That way they're still usable in emergency situations but it feels better spending resonance.
Consumables in general. Potions come up most often, but wands, trinkets, scrolls. If it runs out, people are annoyed that it also costs resonance.