Why doesn't he get more involved in the project and stop complaining. Yes Ember is lacking in the prioritizing department but it's a community project and there is always room for more people.

There are a number of forks/patches out there that provide hasOne semantics and saving for multiple records in the same commit (ours are the mhelabs ones)

- https://github.com/mhelabs/ember-data/tree/has_one

- https://github.com/mhelabs/ember-data/tree/parent-child-comm...

- https://github.com/ghempton/data/tree/relational-adapter