I like idea of Tungsten carbide, however it is a fairly complex ceramic that requires complex gas and liquid phase chemical reactions that would make factorization ore production look simple. There's likely going to be more than just the "chemistry bench" to make it. IE: lots and lots of time both to code and use.
Except the FTB team and Yogscast have already been in talks and Slow announced on his stream that they are in fact going to be doing so.
I really hope that we eventually get to other tiers of RP stuff. I've been hoping for a while it would get there, hopefully sometime in the future ;-)
They are currently getting to official packs. There will be the Retro, Voxel, Universal Electricity, Magic Worlds, Tech Pack, Direwolf Pack and Ultimate. The 3 that are out now are officially released, non-beta packs. Once the rest come out it will be a full, non-beta launcher. He (Slow) did say they would be switching over most likely once they update the rest of them which is "sooner, rather than later".