Gotta disagree, fearsome.
Any HC candidate that was scared off by an apparent lack of a current starting QB would be undeserving of consideration in the first damned place. As to prospects of one, we have a high 1st rounder, don't we? And two very high 2nds to either use as a QB pick or in a trade up in the 1st?
And I didn't say retaining GW was a deal breaker IF the HC candidate was sufficiently impressive. But let me turn the tables on you. What kind of HC candidate wouldn't at least CONSIDER retaining a DC like GW?