If Dissly returns to form (and a huge part of Dissly returning to form is the Seahawks choosing to utilize him more) this contract will seem quite reasonable.
He's a very competent blocker, who can take on Bosa about as well as any other tight end in the league. Bosa will get his, but so will Dissly. He's not quite as good an extra lineman in pass pro as George Fant was, but he offsets that with better downfield work, extending run plays.
Good route runner, if the offense schemes him open, he tends to be open. Solid hands. I don't recall him ever having a case of the dropsies. Personally, I think he has the potential to be a top 5 receiving tight end, if given the opportunity.
I think his lack of production has more to do with how the Hawks have chosen to ease him back after his injury, Wilson's late career reluctance to utilizing tight ends, and the Hawks inexplicable move of bringing in Olsen.
Dissly has the potential to be our TE #1, and this contract reflects that. I expect some pretty fierce competition in training camp, and it will be interesting to see who comes out on top.
It woukd be nice if the contract was more incentive laden. My only real gripe with it is the amount of guaranteed money. Barring further injury, though, I think he will earn the contract.