Is there any topic like it? I didn't find, so I've created this.
1) What about luaJIT using? It can save cpu's time and make loading faster. It really works, have you ever used android phone with JIT and without it? Performance difference is about 40%, I think it is enough for spending some time and including luaJIT in minetest.
2) API for player smooth moving - for transport :)
3) API for making nodes from many blocks