Jason La Canfora goes over some of the changed rules and available players should an uncapped year take place in 2010 (looks likely). His lists don't show much potential on them, though as he adds "high-priced, under-performing players can be cut with no cap hit."
What I take away from this: An uncapped year isn't going to let Snyder's big wallet change our team around. Aaron Kampman is the only worth-while addition I can see, but Jarmon and Orakpo have been showing enough promise to fill opposite a rejuvenated Carter.
Campbell will be a restricted free-agent, that can bring in a 1st round pick on a $2 million tender (or a 1st and third with a $2.5 million). That, to me, looks like the most likely scenario. Snyder offers Campbell $2-$2.5 million, a team can give us a first (and maybe a third), in which case we draft a QB and top-ranked lineman. Otherwise, we have Campbell for cheap and try again with a bolstered line (first two picks...?).