If Joe had more passion and love for the game and the desire to be great, he would do the extra credits. Work on his mistakes like throwing on his back foot. Extra time to learn the play book in and out. Film study on opposing defenses to be able to make checks and audibles presnap. Rarely do you see Flacco make presnap adjustments, always relying on his OC to call the plays. I mean he's Been in the league since '08.
You see a rookie QB in wentz making audibles at the line then you hear stories about him studying defenses while going on dinner dates. That's having the passion to be great. Things like that translate.
Playing in his 8th season, I don't think we can expect to see any drastic change in his level of play. To me, what Flacco is, is what we'll always get. A inconsistent tier 2-3 QB who's prone to make 1-2 boneheaded plays a game. We just need to build a great team around him.
Only great thing about him is his clutch genes in the playoffs.. But boy is it a Tough roller coaster ride of a regular season just to get there.