This might be entirely irrational, but what do you think the chances are of holding on to Moore AND Archer? I can see Hill getting cut after this 2013 season (given the roster bonus and backloaded contract), and can see Moore being a solid backup or trade option. There's also the possibility that Moore may start if worse comes to worse with Stafford, and Archer would be backup. Also given the possibility Moore could be as susceptible to injury as Stafford, having Archer would be a great 3rd option.
Here's the thing though- Hill will probably not be here for the 2013 season. If that happens, what do you think the chance will be that we'll take a bit of a hit this year by keeping four QB's on the roster, so that when 2013 rolls around we'll have a Stafford, Moore, Archer lineup with no worries about any of them being ready to step in?
I don't think we'll take the risk of trading Moore- to be honest with you we don't know what he's capable of, and I think the complaints about his arm strength are overexaggerated. I've seen him launch a ball almost 70 yards in a clutch play. The boy is 22 years old. The times he did play against SEC defenses he adapted to the tighter windows and was consistent in avoiding picks and making completions. He can throw bullets when he needs to- he has such few examples on film because he rarely did, and you don't throw balls that are less catchable when you don't have to. I don't think he was put in enough situations that test his arm strength yet, and he might learn to adapt around it. There's nothing wrong with a QB having and perfecting his own style.
Don't know much about Archer, but my prediction is 2013 Hill will be cut and we'll need two backups, with Archer being our Stanton. If we take a 2012 hit, we could have a solid QB line all ready to go the next season.