[dessant]

> Compatibility

That's a clue for where the Vue team's mind is regarding the current API. Compatibility to me reads like legacy. That's in contrast with the claims above that this is just a new optional API to serve a broader range of use cases.

[gustojs]

This is a phrasing issue. In the team we use the compatibility word all the time in the "it's a good feature proposal but what about compatibility" context. For us this word had a positive conotation and we missed the fact that it can be treated in a different way. That's a good lesson for the future.