I get that QB is a nuanced position, but with Christian Gonzalez we’re reminded that it’s usually quite obvious when a blue chip pick hits. You see elite level play. You saw it with Seymour. You saw it with Wilfork. You saw it with Gronkowski (even his rookie year he that extra level, just not consistent yet.) You saw it with McCourty. You saw it with Hightower and Jones. These guys stepped onto the field and it was clear the talent is there.
This idea of development and improvement over 3-4 years. Can it happen? Sure, but it’s rare, and usually it’s more about a short term illusory leap with all the right pieces coming together (look at guys like Flacco, Dalton, Daniel Jones who “turned the corner.”)
It can happen. It has. It usually doesn’t. The underlying raw talent (Josh Allen, Aaron Rodgers, Peyton Manning) is usually the secret sauce for that type of incremental progression into high level play. Of course, even in that case, for each of those guys there are dozens of high ceiling QBs who never progress.