I think the OL moves have been good, not great, so far. I agree with several on here about needing a very good left tackle that is ready to start.
However, the one thing I'm most concerned about is getting Sam a receiver with a wide catch radius that can also go up and get the damn ball. In addition, I'd want one that can step in and start right away. Historically, rookie receivers have a tough time acclimating to the NFL (article source below). Very few have reached 1000 yards. It also takes a long time for most to gain the trust of the QB, so a throw can be made before the receiver makes his break. That confidence is tough to come by, and seldom happens for a QB with a rookie receiver.
Now that Robbie is gone, the only proven, reliable asset for Sam is Crowder. He's been very good for us, a solid underneath guy and obvious chemistry with Sam. Griffin flashed until getting injured, who knows what's going to go on with Enunwa this year, and hopefully Herndon bounces back. No one else on the roster is worth mentioning for this conversation. But we still want that guy who is a 6'+ WR and can be the better player vs a defender on any given throw. Even if we draft WR at 11, the chances are stacked against that guy being a #1 receiver for us this year. Unfortunately there are no options in free agency to step in like this. I'd certainly be open for a trade here, but not for draft picks.
Stick with the plan, draft a lot of OL, a future receiver, maybe an OLB. My main point is we shouldn't expect #1 WR output from the draft this year.