meh! as plenty of people have pointed out already. the insanse requirements of low level mats are stupid. high end mats are pretty much useless(people just throw them away after grinding them for levels).
the only thing that matters is the lowest tier mats.
just remove 80% of the higher tier mats of every zone and replace em with the low tier stuff and then at least you wont have everyone in the starter zones.
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no you can only do that to refined materials. not the ones you gather.