TL;DR
It would be nice if the Lua environment would immediately error when attempting to use a removed feature.What?
As an example, coroutines are disabled in the control phase, but the error when attempting to use them didn't actually state that, and I had to look around on the forum to find out that the feature was removed on purpose.I believe that it should be feasible to cause any attempt to access the value of coroutine to emit an error that, "Coroutines are disabled", possibly with a link to a page listing (all of) the ways in which the Lua environment differs from a vanilla interpreter.
