Banned items:
1) Anything that provides chunkloading. Chunkloading makes bees OP beyond belief.
Lastly, if you ever have this server up and running, please let me know. I love bees to death and would play this server.
EDIT: To explain my point about not allowing alvearies: Minecraft is a game where a stack of items only go as high a 64 (and a small inventory to boot). This is a small number, and by allowing alvearies, you'll very quickly be dealing with currencies at a larger scale as opposed to alvearies when coding your transactions of trading combs for stuff. It is always easier to work with smaller numbers as opposed to larger numbers (which are unnecessary, IMHO). For example, think of MMOs where items are sold for stupendous prices (e.g., one eq for 500 million of the game currency).