Resurrecting an old thread, I know, but I agree with the OP and I can't continue to shell out $20 bucks a pop for a too fragile hanger. I've been riding for over a decade and never had a hanger bend so easily. I'm on my 3rd one in two months. I went through two in back to back xc rides. Not to mention I got some bent spokes out of the deal. I'm a little pissed because I'm shelling out money hand over fist because of this issue. I'm loving the frame, but this is quickly becoming a major source of discontent for me.
As a mechanical engineer, my opinion is that both the hanger and the right dropout should be beefed up on the ridgeline. The dropout could easily be made at least 1mm thicker and the hanger redesigned to accomodate a thicker dropout and change the stress concentration area (located at the line that passes across the mounting holes). Or possibly change the alloy.
Lynskey...if you're listening, I'll be happy to test any prototypes.