The Most Jarring Creative Changes of the Marvel 1980s

Here's a chronological list of some of the most jarring changes in creative teams from the 1980s. Thoughts?

• 1981 - Bill Sienkiewcz replaced by John Byrne on The Fantastic Four. Sienkiewicz was still stuck in his Adams-phase and this change lead to one of the greatest runs on the 1980s.
• 1981 - John Byrne replaced by Dave Cockrum on The Uncanny X-Men. I never adjusted to Cockrum coming back onto the book, but I stuck with it was rewarded by Paul Smith.
• 1983 - Paul Smith replaced by John Romita Jr. on The Uncanny X-Men. While I love Romita Jr.'s X-Men, Paul Smith's X-Men were pretty close to perfect with Smith's smooth and clean pencils.
• 1984 - Bob McCloud/Sal Buscema replaced by Bill Sienkiewicz on The New Mutants. Wow, that was an incredible stylistic change. Bold and I think it really did pay off.
• 1984 - Roger Stern/John Romita Jr. replaced by Tom DeFalco/Ron Frenz on The Amazing Spider-Man.
• 1985 - John Byrne replaced by Bill Mantlo/Mike Mignola on Alpha Flight. Being a Canucklehead, I stuck with this title up until about issue #50, but the title never captured the magic that Byrne had with it.
• 1985 - Bill Mantlo and Sal Buscema replaced by John Byrne on The Incredible Hulk. I was thrilled with this change, but it would take only a half year before my heart was broken.
• 1985 - Al Milgrom replaced by John Buscema on The Might Avengers. While I enjoyed Milgrom's art with Stern's story, Buscema was in another class and his work, along with Tom Palmer's inks were breathtaking.
• 1986 - John Byrne replaced by Al Milgrom on The Incredible Hulk. One of the biggest and the most disappointing changes of the 1980s.
• 1986 - Walt Simonson replaced by Sal Buscema on The Mighty Thor. Sal was an adequate replacement on the art chores, but he never captured the grandeur that Simonson could.
• 1986 - John Byrne replaced by Steve Englehart and John Buscema on The Fantastic Four.
• 1986 - Bob Layton/Jackson Guide replaced by Walt and Louise Simonson on X-Factor. I was so disappointed with this change as I really enjoyed Layton/Guice's take, but would come to warm up to the great work the Simonsons would deliver.
• 1987 - Al Milgrom replaced by Peter David and Todd McFarlane on The Incredible Hulk. Another sudden change that came out of nowhere, but would also lead to the longest run for David on the Hulk for any writer.
• 1987 - Walt Simonson/Sal Buscema replaced by Tom DeFalco/Ron Frenz on The Mighty Thor.
• 1988 - Todd McFarlane replaced by Jeff Purves on The Incredible Hulk. 
• 1989 - Steve Englehart/Al Milgrom replaced by John Byrne on West Coast Avengers. 
• 1990 - Brett Blevins replaced by Rob Liefeld on The New Mutants.