Don't get me wrong, I think the DLR is a great piece of work. It's just limited in how much it can optimize dynamic dispatch since CLR itself can't dynamically

Don't get me wrong, I think the DLR is a great piece of work. It's just limited in how much it can optimize dynamic dispatch since CLR itself can't dynamically optimize. As far as tooling for building languages, DLR is pretty epic. It's too bad Microsoft decided to bail on dynamic language work.