I would be wary of saying he'll be a consistent pass rusher.
He's developed his game over the years, but prior to his 5th year, his sack totals from rookie to now are: 2, 1.5, 4.5, 3.5 and 9.0
From watching Miami, I believe the uptick in sacks was getting Zach Sieler more playing time and he was the DT to "fear" from a pass rushing perspective. He finally got heavy minutes playing and it paid off for the team.
Wilkins may be walking as the rumor was he wanted Q. Williams money, near 24mil AAV. It was rumored Miami saw him as a 17-20mil DT.
Sieler, who I think is a better pass rusher and good enough run stopper signed a 10.25mil AAV deal, so Miami may not be seeing the value in paying Wilkins open market pricing.
Wilkins is a good teammate/leader, but also a bit of a knucklehead at times with dumb penalties and years ago he jumped on a WR back during a celebration(Preston Williams) and injured him. He was never the same WR afterwards and was out of the league.