I enjoyed learning this and I can see the benefits of having 3 D Printing for language revitalization. It could be tactile for the children to use to build words from the 3D letters.
The down fall I see from 3D printing is cost. With language revitalization it is a tough time to do all the work that we do and we can build resources at a much more cost effective way to learn our languages. Funding is a down fall as well as we are all competing for funding to keep our languages alive.