So I tried VoxelLibre recently and I have three main papercuts:

• The lack of dual wielding (and perhaps crits and other Combat Update things).
• Shift clicking items doesn’t do the same thing as Minecraft in a lot of cases. Shift clicking armour doesn’t equip it, for example.
• I think sometimes there’s a keyboard combination for opening the inventory (shift+I?) that I keep accidentally hitting when I try to move.

Still, it’s an interesting project and Iook forward to how it continues.