There are better options out there! NM's are tough to camp because of annoying bots and other campers but FFXI had Beastman seals to get you into BSNM and kindred seals to get you into KSNMs and other stuff like that (basically instances you have to work for, for you non FFXI people). not to mention another thing in FFXI; pop items! lets say there is a sheep NM you want, you farm normal sheep in the area until they drop a special item that you use to spawn the NM instantly, already claimed as your own so no one can steal from you.