Tonyan was the best TE we had. He came in as a nothing rookie and was fairly productive for us and then had a pretty good injury and came back from it. he wasn't taking a roster spot from anyone that he didn't deserve.
Same with Lewis. He was vital on this Oline, regardless of his pass catching. He may not show up in stats, but he was also here because he served a very good purpose.
Cobb, he was here because he was familiar with Rodgers, no doubt. Biggest knock was age/health. I'm ok with a guy like that being an option because of familiarity when you already have a bunch of no production hoping to develop guys already on the roster that we easily stashed on the PS anywa.. We didn't really need another one of those, we needed to develop the ones we had.
While Cobb didn't make a ton of plays, he did make some important ones. If we'd have had a younger guy that looked ready or like he had the potential to be better i'd have more issues with Cobb getting snaps over him, but we didn't really. The young guys we had that fit that bill were playing a lot when they were available.