I've had numerous and very powerful magic eaters spawn in around my character when casting, while I am at a very low level (3). These spawns are incredibly powerful for such a low level, and can potentially and frustratingly end a concept from an overwhelming and purely random spawn.
I'd suggest lowering both the maximum amount that can spawn, as well as the stronger of spawns, while within Sanctuary and Sanctuary-related areas (such as Q/A's and the worm pits). I don't think such powerful spawns should threaten such low levels so early in their lives.
There's some simple IC means to combat this, find IG.