For those who want more speed, know that the Tampa Bay Buccaneers are thinking the same thing. According to Pewter Report, cited in this PFT article, the Bucs have talked to Demps and made their interest known. This would be a move to open up the offense but could also spell the end for some familiar names with the Bucs. If Demps comes on as a receiver, it puts Benn, Stroughter and Parker on notice as Demps is a dynamo in the return game.
For now it's speculation, but it would bring another dimension to the Bucs offense that has already improved on paper this offseason.