Personally I like lua, it makes sense for map or minigame scripts especially and I already know the language. I like playing against bots in survival too though I don't really have any plans for changing it. I am not sure whether I would use an account system, though I'm not against it either as long as it's optional. Recently, I started liking 0.7 for some reason. I saw there was a base for sixup and thus I tried seeing if I could get it working. And while there aren't exactly many players, there do still seem to be a few 0.7 players and I felt like coding it anyway. I think it's decent now, though not perfect either yet.

It'd indeed be nice if some of the general fixes could be merged into the upstream. I don't really have much experience with it, but I guess I could maybe make pull requests or something?

I would be happy to contribute some fixes and i18n work upstream (it seems the current i18n has not been maintained for quite some time).

Survival mode is very popular in China; although my server is not registered with the master server, it still has a stable player base, and I have done some modding on it. As for Lua, I personally believe it should only be used within a well-defined scope; otherwise, it can introduce additional complexity and issues—for example, I once caught a heap use-after-free caused by the Lua scripts.

I am not opposed to Lua; the current implementation of Lua performs well in certain scenarios.