This is actually going to be my next project, now that we’ve shipped Octane there’s a lot of code that we can slowly start to move away from! The plan is to move toward optional features and then deprecations for many of the classic features, allowing Octane users to opt-in to the benefits progressively, while still supporting Classic users for some time as they transition.

Definitely curious how you got these numbers though. Our current estimate of Ember’s size is ~160kb after min/gzip, and Ember Data (the only other large library installed by default) should be less than that. Jquery should not be included by default anymore, which would be a large chunk. Were you building a production build? `ember build —env=production`? That will cut out a significant chunk of debug code and assertions that are only used for development builds as well.