My input: if the nether becomes what the guest worlds become, every one looking for a nether related item is screwed. it will be constant death, griefing, and theft, and no one will get anything useful. there has to be some kind of protection, or the nether is pretty much useless except for the scenery. on the other, hand, if anyone can get anything the find with no problem, then you're screwed again. somebody's going to get a monopoly eventually, and prices will still skyrocket. so, the best solution may be to have, I don't know, a nether shop or something? right at the entrance? so, you go in, and have the option to buy it at a relatively fair price. or, you can choose to go find what you want/need instead. not sure.... would this be overly complicated or impractical, etc.?