I'm on board with Patterson and Dorsett as nice bench stashes, depending on league format.
FWIW, Dorsett has been running with the first team for a while now in their base 11 formation (3WR, TE, RB) with Hogan and Edelman. Obviously with Edelman out 4 weeks, that leaves a spot open for a guy like Patterson.
Rumors beem floating around here for a bit now that they will add another WR via trade. A few names mentioned have been DT, Sanders, Cobb, Golden Tate, Parker.
If that happens, Dorsett and CP84 will probably be afterthoughts.