These guys were the big "Spider-Man" writers I recall reading when I got into comics in the early '90s. What did you think of their output?
I remember reading a LOT of Mackie books in the 1990s- mostly his Spider-Man. And in retrospect... none of them are very good. To me, this guy absolutely reminds me of the "Typical '90s Comic"- a lot of boring nonsense, nothing of great interest, and very simplistic stuff. Most of his books ended up pretty terrible, and he bailed on the Spidey books around the Clone Saga (which, in his defense, had a lot of editorial intervention).
I guess he also recreated Ghost Rider, one of the more "90s" books ever. I never thought that book was any good, and it definitely didn't end well.
David Michelinie is as iconic for "Bad Spider-Man Stories" to me.
I remember little of Kavanagh's work, though he was one of the writers of Maximum Carnage, which was pretty meandering and bad in parts.