Bad idea, Riot. You're gonna make Tryndamere with Conqueror impossible to fight because no one will survive him, and building armor to counter him will become stupid.
Try again. Don't do the whole "We'll just nerf Tryndamere" thing; try again on Infinity Edge.
**EDIT**: This isn't just about Tryndamere. This is about how Riot is adding ANOTHER source of true damage, making armor builds even more laughable. Combined with all the sources of %-health damage out there these days, as well as the upcoming change to the Last Whisper items, and tanks are not going to have their survivability anymore.