Wow. Just a few weeks ago, someone floated the idea of Microsoft ditching Trident in favor of WebKit. Now, if they really are considering a switch, I think I'd be more in favor of IE using the Gecko engine... WebKit is becoming too popular, which could pull us back into the dark ages of one engine to rule them all.
I agree. Too bad many sites love to serve legacy page to IE. Unless IE pretend to be other browsers, it sometimes revert back to IE5 pages from server and ended up doing IE5 mode on client, just terrible.