Alex Smith is the embodiment of treading water at the quarterback position. The Jets really, really, really need to devote the next two years to finding the great quarterback, and they need to do it with maniacal focus. It's better to crash and burn trying to get the next Elway than it is to spend a decade doing 8-8 with the lame quarterback. Watch what the Texans do with Schaub--I guarantee they'll do with him exactly what Harbaugh did with Smith, or they'll just let him walk as a FA.
If Kubiak is still there I guarantee he gives Sanchez a look whenever the Jets part ways with him, and I would even say he will turn him into the next Matt Schaub, as long as he still has the elite talent everywhere else like they do now.