Kudos to Trinity and Cunbelin, who both pointed out a comment in a recent Onicore interview with Oni level designer David Dunn:
Recently I was totally blown away by the other new Bungie project under construction, but I can't say why. (Sorry, company rules)
The weight of this statement increases when one considers the lines immediately before it, praising aspects of Halflife and Quake 3. If it's this impressive to a member of the Oni team, then I think we've got something here... check out the interview for the whole story.