I haven't used Racket, though it looks cool. Since you are conversant in a few languages, I'd like to pick your brain if I can: What do you think Racket could

I haven't used Racket, though it looks cool. Since you are conversant in a few languages, I'd like to pick your brain if I can: What do you think Racket could do to improve (particularly 5)? And what could other languages learn from Racket's module system?