I've heard alot of Clerics talking about the expense of keeping a group alive, and confirmed this thru my own experiences. It's a difficult job depending on some groups or quests, and a lot of responsibility. A difficult quest, or difficult player in a situation where a Cleric is watching is limited (read as Expensive) Heal scrolls or wands being used up and once you're out, often the party wipes and you've wasted all that effort, and resources.
I was thinking about what could solve this, or at least diminish the expense and make it possible for more Clerics to be prepared in quests to do a lot of healing.
This may not be the ultimate solution, but it would definitely help: Special Heal Scrolls with a ridiculously high UMD and a low price. Maybe given as a favor reward. Or wands, maybe include other spells like Rez or CSW, depending on the Dev's direction.
Essentially only a Cleric with the Heal spell could use it, because the UMD would be beyond attainable. They would be inexpensive, so it would be possible for a Cleric to afford buying them and having a stock ready when necessary. It could eliminate a cleric asking for donations, and being upset when the mana sponge doesn't help out.
This would be set up to favor Clerics only, so the UMD rogues, etc. would still have to pay for their scrolls as usual.
By eliminating the expense, you may find better, more prepaired Clerics, and find them more often. Just my 2cp.