Isn't there a risk that Nether gets extremely large after a while? Perhaps the sides should be trimmed from time to time so they regenerate and more glowstone is created?
EVE Online characters:
Daedalus II ex-CEO TOGOA, Daedalus III slave of Daedalus II
Little Molok Asura Engineer
"Trying is the first step towards failiure" - Homer Simpson