The long arcs of the eighties included Sin Eater, Sinister Syndicate. Gang War, Assasination Plot, and Kraven's Last Hunt, as a few examples. These were great arcs based on story and characterization that was spot on. Those were concise stories that did not piss on the past or lump extra baggage on Peter Parker that was so contrived that it later gets avoided a month after saying it's a fantastic addition/change. Those stories felt real, but Super-Heroic at the same time.
The arcs of today are lacking any hint that these writers/editors understand who Peter Parker and Spider-Man is in the first place.
The shock value tactics Stan Lee used on the covers of the first 200+ issues were gimmicks to get you to buy the read, yes, but they were mostly one shot issues or 2 parters that did not give Peter lame new powers he didn't need or mimic the movie powers because the comic creators decided to be slaves to the movie for an extra buck.
Please spare us any comparisons of Stan Lee to JMS/Alonzo/Quesada.
Go read 80's Spidey from start to finish again and then tell me these JMS plot devices fit anywhere near a Spider-Man comic.