A little more than 10 years ago, a V8 in a BMW was considered blasphemy. They've done V12s, 10's, 8's. It seems a little silly to me to consider a V6-based solution tantamount to BMW-heresy. I'm old enough to remember when BMW executives said, "we don't do FI cars because there are better solutions allowing us to stay NA."
The point is in this "new world" where it appears that energy efficiency and conservation agendas will drive most engineering designs until, or if, the next miracle energy breakthrough occurs, everything must be on the table.