Look - we only have 2 startes from this season who are UFA's and only one of those on Offence. I would not be surprised to see 90% of our starters return next year as starters (OL being a key area for potential change - but Jennings, Tucker, Teague, Villarial and Williams seems a lock to me).
If this happens, I think we see the playbook expand as the continue to learn it and play at a high level together. Better play out of 10 of our returning starters can only help out the QB. Not forgetting that another season under Wyche can only help Drews mechanics, thought processes, etc.
There is NO need to have an upper echelon QB to ensure you get to and win a Superbowl. The examples have already been named so I won't bother. But with the young talent, veteran talent and continuity we are about to see - I think we will do very well next season with Drew at the helm. 8 wins this year showed us what a team performance is all about, only 1 (Miami) did we rely on Drew.
So Yes - the slightly less complicated answer is YES we can make the playoffs and the Superbowl with Drew at the helm. I for one believe that it is MORE plausible with Drew there than with JP Losman - as he's a bigger question mark than Drew, and we may mortgage another couple of years of playoff time for him to develop as a starter. Why not have him pick up for Drew as we head towards the playoffs next year??