re: The "real test" next yr will be on offense ...

We return a group of receivers who could not gain separation consistently and possessed hands of stone this year.

We lose the starting center plus another veteran starter on the o-line. It is good to return 4 players who started games last season, though.

We lose the entire backfield: QB, FB, both main HBs. That's a ton of seniority that we simply cannot just reload. That means a ton of question marks.

Combine that with the complete botching of the OC situation, and fans have every reason to not be optimistic about the state of our offense next season.