Hussar
Legend
I am not really seeing whether you use that canon. What I mean is if you want to author what the deity does and cares about, wouldn't a home-made deity be better? If you entered another campaign and wanted to author something for the Raven Queen that went against the canon, are you saying you would want the DM to let you override the canon?
There really is very little canon. It's just not fleshed out in 4e.
But in the larger context, given the choice between allowing a player to create new interpretations or following published canon, I'll now go with the player every time.