I agree on tons of NM's with different pop conditions.

I do, however, think that all NM's should drop Rare/EX items, as to not make them targets for gil farming. Also, any NM with a pop timer of over 4 hours should be a 100% drop rate. They're still going to be camped like crazy, so how about make it less of a mind numbing chore and take out the whole 0% drop rate thing for the longer timers.

Camping certain things in WoW has taught me that long timers are the worst thing ever, but if the item is guaranteed, it's not as bad to camp.