If you want to help out I would have no problem with that. Like mentioned however, we are still at early stages of development, which means ideas are being thrown around, and very few things are set in stone.
If you would be willing to help us out with game-design (items, custom mobs, damages, other game features) in terms of providing ideas, that would be useful! If you're good at any sort of art, writing lore, or even if you know a language that I haven't listed above, you can help us out with translating the gamemode once we get close to releasing it (not soon).
All of those are possibilities, if you are interested, just let me know what you would be willing to help out with.