well, he does have plans until luajit3... maybe we can book him in advance? I'd still like a fast ruby in five years :D

May be someone should work on Ruby to Lua instead? Using Lua and LuaJIT as a underlying languages. Like Coffescript to Javascript.

That would be a lot faster then working on Ruby VM. And since Ruby 2.0's VM is still as slow as hell compared to LuaJIT