This may be a rhetorical question, but I'll answer it as if it isn't.
The most important thing after the QB is getting to the opposing QB, and it's one of the areas of weakness left over after the offseason. I think Fitts is a fascinating prospect with his size, speed and ability, and if his health holds up, I think he could be the sleeper of the draft and could help go a long way in determining what we have at that position, which in turn will be a big part of the way they address next offseason (which I hope to be a playoff year).
That's why I answered Fitts.