Please include the getEntityGraph feature in the core of breeze.js.
Currently this functionality sits in BreezeLabs and we use this feature everyday. Our requirement is to sometimes send entire entities up to the server because we have a hierarchy of objects with interdependent properties. So we need more than just the changes in specific entities in certain cases. The getEntityGraph feature works perfectly however the longer it stays in BreezeLabs the more chance that at some point it may not be updated along with the BreezeJS core.

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Ward Bell commented
I won't let it get out of sync with BreezeJS core! But I agree that it belongs in core and will argue for that outcome with your help (and anyone else who votes for it).