i'm kind of scared of alternate tunings, i've messed with open e alittle, but didn't come up with a lot i liked. some little ideas, but couldn't tie them together well.
i tried your tuning suggestion for a couple of minutes today. one big power chord, root and fifth lol. kind of a neat concept that may take the fear out of alternate tunings for me. leaves it open to fill in the blanks for whatever chord you're playing over. cool idea