I agree about the blocking, but I don't know about the rest.
This is old news here, but I want a BB who'll - to repeat myself for the umpteenth time - get us 4 yards on 3 and 3 reliably. From what I saw last year Marshall isn't that back. Some of that was probably inexperience; as Boomer pointed out awhile ago, he was a high school TB a year ago. No doubt that was what led to his lack of speed to the mesh. I suspect that some of it is running style, however. He's a speed merchant, not a bruiser. What you want at BB is both (Dwyer), but you seldom find that so most of Coach's BBs have been bruisers. There's a reason for that. When you run up the gut, you need to be fast to the mesh and have enough size and strength to pull out of an initial hit. What I saw from Marshall last year was a home run hitter who went down too easily in short yardage situations. I'd rather have somebody like Laskey.
But, he does have great speed and, no doubt, the coaches have been on his case about strength and determined running at the mesh. If he can improve there, he could fulfill the promise many here see for him and he'll convert me. Otherwise, I'll take the best bruiser(s) we can find this spring, thank you very much.