Removing Lizuca is only realistic if the difficulty of the starting areas is seriously tuned down a bit.
Else those new players, low levels sorcerer and rogues or calibans will pretty much be doomed.
The changes I would like to see in regards to this and propose, are to simply tie a small church donation to the healing.
Not more than ten gold pieces perhaps, since she is still primarily used by the lowest of players, but still something to make you reconsider constantly running up to her non-stop.
What I also wouldn't mind seeing, is familiars costing 50 gold per level instead of 100 to raise.
I love how you have to treat them more like traveling companions now, but the costs are a bit steep.. I simply end up not using my familiar, ever, when it risks dying. (So yes, I haven't used him in combat more than once yet.)