How bad was this season

I have seen the word "disappointing" a few times in this thread, and I think that's the most accurate adjective. But what disturbs me even more is the outlook. The schedule will be much, much more competitive next season. The team is old. The last draft class is disappointing, though due to injuries in the main.

A few questions, not in any particular order:

What the #&$&!! happened to the offensive line blocking.?
Where is the pass rush?
Can the defensive backs learn how to play zone defense?
Can we find a way to stop opposing quarterbacks from getting first downs by running when it's 3rd and long?
Why is Jimmy Graham on the roster if he's constantly not used?
When will the older players "fall off the cliff?" I think this may have happened with Cameron Jordan, but what about Davis and Mathieu?
By the way, what happened to the Bink package?
What happened to Taysom Hill?
Why does the team begin game after game by either allowing a touchdown drive on defense or going 3 and out on offense?

Most of these questions have to do with coaching and personnel management. Draw your own conclusions.