Hi Eli!
So, I represent PayPal on the TC39 and try to keep up with what's coming in the language. I think that JavaScript will continue to cater to people of varying preferences. We're seeing a lot of attention on classes recently, but I'm looking forward to some other enabling features (like realms) and some nice functional programming syntax (like es-pipeline-operator).
Often people will ask me when we'll get types in JavaScript. I think that will never happen. One of the problems is we need backward compatibility and that's often a real show-stopper for some things we're doing.
I'm excited about the features coming into JavaScript. I think the language is so much fun to write now. Huge thank you to Babel for making it accessible to those of us still supporting IE10 or lower.