I think I agree with Remy here. The Bears aren't going to throw a rookie in at RG. And I know everyone hates Massie and Leno, but Leno isn't being replaced anytime soon. Massie may be, but he'll be the opening day starter if healthy.
WR isn't a need as much as playmaking in general is. I still think the Bears are going to draft their long-term heir at TE with one of the 2nds. Pace has been pretty consistent in trying to pick long-term options at positions where there are none early in the draft. While WR does potentially have long-term talent, they don't that dynamic speed guy. I think that was the reason for signing Gabriel, but his lack of size was a deterrent to capitalize on his speed. Can get a lot of bang for their buck by going WR early. Plus, the pick would serve as a hedge in case they can't get Robinson signed long-term.