Personally, if I were the Browns front office, I would Keep McCown and draft a QB to learn from him. Johnny seems like a bust on and off the field tbh. Even if he is decent on the field, the guy keeps doing dumb shit off the field. Not worth relying on someone like that.
I know Johnny has a 1st round pick invested in him, but, sometimes you gotta cut your losses... Just commit to McCown, try and win as much as possible, and take a stab in the draft. Winning might hurt draft position, but I think the team as a whole would benefit from the success more than having a high draft pick. QBs can be found late round 1, or even round 2 or 3. Pick the right guy and match him with the right coach and system imo.
Move on from Pettine. With a young QB learning, you need an offensive HC.
You do not need an Elite QB.Just a level headed one with smarts and good players around him.