XRE Heatsink?

Everyone is talking about the terrible heatsinking from the stars that the cree's are ariving with. I was wondering if anybody had thought about measuring the thickness of the star, flipping the star over and, plunging to depth with an endmill. This would create a counterbore underneath the emmitter. Then you could turn a heat sink with a small pilot which would fit in the counterbore. Then you could either reflow solder or, use thermal adhesive to bond the emmitter directly to the heatsink. I haven't seen a cree xre yet but, I thought maybe you would not have to use the top pads to solder to. Then you would not have reflector clearance problems. Is this reasonable?
Mike

Any reply would be appreciated. I think it will work.
Mike

I think the plus and minus tolerances of the heat sinks is greater than the 5 mils thickness of the thermal pad. Some of the bores would grind into the Cree while others would not make it all the way through.

Just a SWAG but it makes sense.