I originally posted this question briefly in the Cebulski announcement thread, but am not surprised it got quickly buried.
I've only been a Marvel Comics fan for almost 4 years, and for the longest time I've pretty much known just Axel Alonso as EIC and the name I've seen all over the books I own. I honestly never paid it much mind since I rarely or didn't follow a lot of the controversial news where his name is apparently dragged through the mud. I've heard and am aware of the stories of past EICs, Jim Shooter, Tom DeFalco, the short-lived 5 EICs, Bob Harras, and Joe Quesada, but those were all before my time.
Now however, much like how I'll be experiencing the departure and regeneration of my first Doctor Who actor Peter Capaldi, I'll be experiencing the era if a new EIC. I have never heard of CB Cebulski until now, and while his resume and work within the comics is impressive to say the least, I'm in the dark in this and have no idea what to expect as a still relatively new Marvel Comics reader. At the base level my only hope is that the character I follow, her books, and the author who writes them won't get screwed over. But beyond that I have no idea what to expect.
I think going back to the beginning and learning from the past decades might help. So for those more well-versed in this stuff than I am, what were the positives & negatives of each EIC and their eras that have graced Marvel's long history, from Shooter to Alonso? And what positves/negatives could Cebulski and his era bring to the table?