I suggest starting up a donation forums page, with the idea of testing crafting, since we don't have a PTR on EVO yet. On this forums page; post your intentions about figuring out the percentage ratio's contributed by XYZ crafting skills, and the tools used to get the best results. In addition, ask for material donations-- or information donations-- for information gathering, by trial and error. Make sure to post results on a regular basis and offer to post the names of donators on a footer forum page under the posted information to date section.
It may or may not work, but you would probably get some free materials, and no one would be mad as long as you posted some results.
It's an idea I had about your good idea. I would donate materials, but I'd want them to be used for testing Tailoring.
Pm me if you start the project. I was planning on revamping the basic information for Evo's wiki crafting pages, anyways. (as long as I stay healthy) So, while I do that, you could be doing what you mentioned.
--Sturger--
P.S. I gave you a +1 to karma.... good idea