I think most people have a remarkable misunderstanding of the safety position in football, or in the NFL as a whole.
None of the safeties in this year's draft, save for maybe Jimmie Ward at NIU, have really above and beyond "free safety" talent. Almost all of the players worth drafting are strong safeties.
The player that people keep clamoring over, Calvin Pryor, is not much better than Wilcox, and certainly won't be with only one camp to get ready for the NFL, and to get ready to be an All-Pro from Week 1 or face the wrath of CowboysZone who quite frankly doesn't even know the difference between Cover 2 and Cover 3.
I think Barry Church has come close to his ceiling. He is good, but I think if the front four is addressed and we have an ability to add a SS with better coverage ability in a Cover 2 we should make the move. It will allow the team to then play Church in the box more against multiple receiver sets, which is favorable to having Bruce Carter run out of the box trying to cover a TE, which opens up too much exposure underneath for screens and drags in the middle of the field that gouged is last season.
Or, we could do what most fans want and try and shoehorn a bad pick at FS into the defense neglecting the entire rest of the roster and watch us be bottom 5% of the league again in pass defense.