Funny. To me, it hinges on WR play. OL is ALWAYS critical, but someone needs to replace Godwin at #1 that can stretch the field. I also worry about Trace. Kid is a competitor, grinder, and winner, but so often last year, it seemed like the deep passes were jump balls or 5 yards under thrown that Godwin made an adjustment on and out-competed the defender. Sometimes the strategy is to throw a ball up and let your elite WR go get it, but that didn't seem to be the case to me. I just watched part of the Wisky game again this weekend and one of Godwin's TDs was Trace moving out of the pocket, stepping up and seemingly heaving it as far as he could down the middle. Godwin had to come back about 5 yds which the CB/S couldn't adjust to as quickly. I'm hoping we don't see Trace "regress" like Hack seemed to do after ARob left. (It might not be a fair comparison as there was a TON of other impacts due to sanctions but there seem to be parallels at this point).
In 2016, the deep threat and read option kept defenses honest and opened up a lot of opportunity for Trace to create which he did well.
In 2017, if a true #1 doesn't emerge and good defenses can key on the run, it could be difficult. The good news is that Barkley will still get yards if the D knows he is running and Gesicki creates serious mismatches with any defender, but IMHO, the difference between a decent team and repeating as BIG champs and being a Top 10 team is finding a true #1 WR.
Time will tell