I'd like to see a bit more originality in the nations rather than white-black-druid-ninja. It just seems...a bit done. The idea is excellent, it's essentially a PK server done with a magical theme, and as anyone who knows me can attest to, I am obsessed with magic in a big way.
It seems like a server like this would benefit from something vaguely similar to the class-system of Final Fantasy Tactics. By that, I don't mean classes, but rather allow everyone equal access to different sets of abilities (based on points or the Cave) and make them pick one from each set, they could choose BETWEEN swinging their wand to absorb a spell's MP OR reflect it back at 1/2 power. Maybe even have a button, then, just for swinging the wand and another for casting with it's current enchantment?
This server could be quite interesting indeed, and much as I dislike PK servers I may even stop here.
