Director Sam Raimi says he still thinks about his unmade Spider-Man 4. Raimi is best known for creating The Evil Dead, but he also dabbled in superhero movies in the early 2000s. Raimi directed a total of three Spider-Man films from 2002 to 2007 starring Tobey Maguire as Peter Parker.
Despite Raimi's Spider-Man trilogy making Sony a ton of money at the box office, the series was rebooted in 2012 with Andrew Garfield as the friendly neighborhood Spider-Man. That being said, Raimi had plans for a fourth Spider-Man movie before it was canceled. Raimi didn't want to rush Spider-Man 4, but Sony had to keep making Spider-Man movies or the rights to the character would revert back to Marvel. The film was expected to star John Malkovich as the Vulture and Anne Hathaway as Black Cat, while also including a montage at the beginning of Spider-Man battling villains like Rhino, Shocker, Prowler, and even Mysterio (who would have been played by Bruce Campbell). Unfortunately, the sequel never happened, but Raimi still thinks about it to this day.
When Yahoo interviewed Raimi about the recently released Crawl, which Raimi produced, he briefly talked about his unmade Spider-Man film. Raimi explained that he frequently thinks about what could have been saying,
"I think about it all the time. It’s hard not to, because each summer another Spider-Man film comes out! So when you have an unborn one, you can’t help but think what might have been. But I try to focus on what will be, and not look into the past.".
While Raimi has turned more to producing horror movies these days, he previously revealed that he would be open to directing another Marvel movie at some point. That being said, his Marvel movie probably wouldn't be Spider-Man 4 since Sony and Marvel are seeing so much success with Tom Holland as the famous web-slinger. There has been a lot of fan art recently imagining Maguire, Garfield, and Holland in a live-action Spider-Verse movie, but that is only wishful thinking at this point.
As mentioned previously, fans have widely accepted Holland as Spider-Man, but there are those that still think that the 2004 Spider-Man 2 is still one of the best superhero movies ever made. Spider-Man 3 was a disappointment to many, but if Raimi would have gotten another shot with Spider-Man 4, he could have ended his series on a high note. While many fans would be thrilled to finally get Spider-Man 4, it's extremely unlikely that will ever happen.