If you are you arguing that we had more talent to replace in 2016 than we will in 2017, I disagree. Our draft picks last year were Murray and Campbell and we also lost BBC and KJ as key contributors. To use CBs as an example, losing Murray and BBC wasn't that difficult because we had 2 proven CBs returning - Myrick and Hardin (to a lesser extent). Who are the returning CBs this year with game experience that can replace Myrick, Hardin and Buford? Don't get me wrong, I think we have some talent, but it's much more of a question mark.
Going into this year, people viewed several seniors as potential NFL draftees - Travis, Myrick, Pirsig and even Leidner (gulp). What seniors on this year's squad have a chance to get drafted? Teams win with seniors, right? There aren't a lot of potential NFL seniors on the roster...
First - We lost a lot of OL
Lauer - started multiple years
Christianson - started multiple years
Campion - started multiple years
Bush - stated a handful of games this year
We lost our starting FB (Miles Thomas), we lost one of our better TE (Plsek)
Second, I think we lost more at CB, I respectfully disagree with your opinion on that subject:
I realize that we had decent replacements at CB, but that doesn't change the fact that BBC and Murray were both really good.
The delta between BBC/Murray/Myrick as CBs & Myrick/1/2 year of Hardin/Shenault was much larger (IMO) than the delta between Shenault/Durr/K. Thomas. That is obviously speculative but BBC and Murray were really good. Side note, we also lost Craig James after the 2015 season, he showed a lot of promise as a CB and returner. He was gone. I think the opinions on James were pretty high before he transferred. We lost him.
As far as Safety - - I feel more confident this year than I did last (at this time):
Travis is probably slightly better than Antonio Johnson, but it isn't a drastic difference. The other S is drastic. Both the 2017 and 2016 team had Duke McGhee and Ayinde, however, we didn't know we had Winfield. We did (but I only think it's fair to argue what we knew in the offseasons because I could say "well, we know Chris Bell is going to be really good at WR"). We are absolutely fine at S next season.
Campbell - - There is not a comparison with our current team. He was the best LBer, by far.
As far as DL - - I think we lost more last year. Cockran was our DL of the year, Big 10 honorable mention. We also lost Alex Keith.
IMO - Cockran + Keith are pretty similar to the Ekpe brothers AND the rest of the DL is better, at least in theory (more experienced, another year older).
As far as Leidner, well, we know what we are replacing at that position. It really isn't much. I just can't buy an argument that his productivity will be difficult to replace.
In my opinion, we lost better players (Murray, Campbell and possibly BBC were all better than anyone on our team) and we lost considerably more depth. We lost 4 guys who started on the OL (2 more depth guys), we lost two key contributors on the DL (1 more depth guy).