This is great, but I wish Apple pushed out updates to Safari (particularly on iOS) more frequently - as it is, we might not see this on phones until September 2

This is great, but I wish Apple pushed out updates to Safari (particularly on iOS) more frequently - as it is, we might not see this on phones until September 2017. Not to mention WebRTC, Service Workers... you can't polyfill them like you can ES2015.