I can imagine as a language founder you'd hate remarks like the one above, where other people tell you that in order for your language to remain popular, you have to address these and these and these points.
What would excite me most (but I'm somewhere at the bottom of the food chain when it comes to language design) is that different new and old ideas for implementation of certain language features can be tried in arc.. so.. if we want to be able to load modules, what kind of options do we have to design a loading system.. and what about arc gives us new / better options to design a module system that other languages did not have, and thus could not consider as an option.