After talking with a few others about crafting and materials, I came to learn that Shadowood is very limited in its use generally on server. At best, it's used for making bows, and even then, it is not used often. So I got to thinking of possible ways that Shadowood could be used by players. Perhaps it can be used for crafting of shields and weapons. For shields, due to the properties of the wood itself, I think a minor protection against negative energies would be suitable. I am thinking a +1 vs Negative energy saves. For weapons (when made into hilts) gives a +1 or 2 negative energy damage bonus. Wooden weapons crafted directly from shadowood might have better bonuses, but that is not really necessary. By wooden weapons I mean quarterstaves and clubs.
As it is, there really is very little that Shadowood is useful for, so maybe adding some crafting options to it would make it more useful to collect.
Another suggestion I had would be the implementation of craftable throwing weapons (axes, darts, etc.) It seems a rather simple thing for these to be added to the crafting system as is.