I think the Ravens would be stupid NOT to draft a QB somewhat early next year. McNair is done and Boller is Boller, so even if Troy ends up being a great NFL QB (which is still a big question mark, regardless of how confident we are), they have no back-up plan.
Where the Ravens err is in not realizing that Boller is Boller and trying to see if Troy is the man. Starting Troy (and Troy succeeding) won't make a difference in whether they draft a QB but will make a difference in where they draft one (1st rd vs. 3rd rd).
While we are very confident in Troy, and with good reason, the NFL is a different game (see: Carpenter, Bobby). While not giving Troy more playing time seems dumb-I don't see what is automatically outrageous about drafting a QB-because you annoint 5th round rookie QB as the new franchise QB after playing one series in the NFL.