To be honest, I don't think were that far off some the next level, the main upgrades needed are:
1) Better OT play - Donaldson is one **** of a guard but is out of position based on needed at OT, St. Louis is average to slightly above average;
2) QB play - MR isn't that far off, if he would make literally 3-5 more completions a game, you'd see this offense fly man;
3) Conceptually on Defense - While I know Manny Diaz is obsessed with his "havoc" plays he often calls very unsound defenses in very inopportune times, he's the DC version of Les Miles, a straight Riverboat Gambler on defense and hoping his players bail him out sometimes - Further to this, when an Offense audibles he stays in the same defense and we get bent over, like to see him have an auto-off call when an offense audibles.
4) ST play - sporadic as they get, field position man. I'm in Canada so we play 3 down ball, I know the importance of STs and what they can do for field position especially with an extra 10 yards of play. If we can get a our net punting average up 5 yards, we gain lots of position over the gameday. Our Punt blocking or assignments is poor, fix that.