That's an understandable perspective and I would be inclined in that direction myself since it starting to look like Luck and RG3 are separating themselves from the rest of the QB field-even though that field is still probably better than most QB crops in recent years and the case could be made that grabbing one of the others might not be an altogether bad idea in terms of finding a realistically "doable" project-type QB.
The one question that kind of nags at me a bit, however, is how much patience the Skins fanbase may have with another year of Rex who, while being better protected behind an improved OLine, still has the tendency to periodically go "haywire" during a game or intersperse decent games with horrendous ones. Not to mention, of course, his lack of "aesthetics"-a nod here to those fans who find merely watching him to be a traumatic assault on their vision of "What a Quarterback Is Supposed To Look Like While Playing."