I would draft Robinson with the mindset he's going to be our EVENTUAL LT. We have Jake Long for at least 3 more years and I think we can get out of his contract fairly easily (don't take my word for it tho). Draft Robinson, have him play LG for a year or two (with reps at LT so he can learn the position slowly), then have him replace Long at LT one day. That sounds like a great plan to me because having Robinson at guard could REALLY help this offense take off. Once we moved Saffold to RG, running lanes were really opening up for Stacy, which can also make life easier for Bradford. Having a great running game can lead to manageable passing downs and it'll really help with play-action passes! Robinson at guard would be amazing honestly, he'll run people over with his physical presence!
OR... We draft Robinson to be our LT now and move Long to LG. I think Long could be a great LG with his strength and quick hands, and it might keep him from getting hurt(???) I say that because it seemed Saffold stayed healthy playing RG as opposed to the tackle positions, but that could be huge coincidence.
Really liking the idea of taking Robinson honestly, helps with the running game big time in a division that's extremely physical, and he I'm sure he can develop into a good pass blocker with his talent. He's a physical player who can be groomed to be a LT.