I think McCoy and Lacy owners everywhere should trade and change luck.
And if you have them both??
I'll cop to actually doing this.
I just traded McCoy for Lacy+Khiry (have ingram so khiry/ingram is my solid #2 slot). This is non-PPR.
McCoy is the better value but it was also about diversifying... have quite a few shares of McCoy this year and none of Lacy. With Lacy's toughest three matchups behind him I'm on board for a turn around. McCoy meanwhile has had his two easiest matchups already in weeks 1 and 2, and a below average rest of the season lined up, including a date with WAS again in the fantasy playoffs.
It could backfire spectacularly, but even if it does, that means I'll probably win the other few leagues where I still have McCoy.
I don't think the injury concerns for either warrant discussion. Lacy's had concussion issues but McCoy has gotten knocked out of two games out of three (before coming back into both of them).