You could do much better, too. You're #2, like you're #1, needs to do one thing above everything else, and that's catch the ball when it's thrown in your direction. I don't care if you're #1 is your home run threat and your burner, even if you're not the dynamic receiver on the squad you still have to be counted on to make a play. And no one with a drop rate like LaFell can be a quality #2 or even a mediocre #1. Until he proves he's got the ability to go up and fight for a ball, and (this one drives me nuts) catch the easy ones, I'd hesitate to look at him as a viable #2.
As of right now, he's good, but easily replaceable, and I certainly wouldn't pass up a quality WR in the hopes that LaFell would develop into that role.
You could easily replace him with. . .who, exactly? If you discount the teams that have two #1 class receivers (like the Falcons when healthy) you don't actually have all that many good #2s. Would you trade LaFell for Lance Moore? Harry Douglas? Brian Hartline?