The Yan impact vs Campbell impact is kind-of pointless.
Both of their performances contributed to one another's ability to affect the play.

You could make the case that Campbell may turn out to be tougher to replace because of his versatility.

But you could make a stronger case that Ngakoue would be a greater loss as he has several seasons of prime performance left in the tank.

They'll both be missed similarly regardless of how you lean in weighing their impact.

The Jaguars best hope right now is that Yan plays in 2020 and Chaisson is ready to step in when he is gone.
We also have to hope that Allen and various rotational guys pick up Campbell's "big end" work while a platoon of DTs can cover his impact on the inside.

It's a lot to ask.
I think this will be a good line in 2020 - but I don't expect a 2017 level performance by any means.

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