Count me among the many who found the MJ stealth missions to be pretty terrible gameplay wise. Even from a story perspective they didn't feel right imo. I know they were probably born of Insomniac not wanting her to just be a damsel for the player to save during story sequences (and that's great), but constantly sneaking into places filled with armed goons who would happily kill her on sight, and then getting indignant when Peter voices concerns about those deathwish tendencies was pretty jarring imo. I don't think they're completely unsalvageable, though. The Grand Central Station section actually wasn't too bad. They need to focus more on setpiece than stealth imo, because their stealth mechanics are really bad.
Honestly, they need to go back to the drawing board on ALL of the side content. I know it's a tired opinion at this point, but I found everything outside of the core Spider-Man gameplay/story to be painfully average at best.
- Random crimes are incredibly repetitive. They need to really mix this up next time and have as many different variations as possible.
- The collectables require no skill whatsoever to locate.
- The faction bases are just the same thing over and over again.
- The way in which you 'track down' Black Cat's base was offensively bad. So totally divorced from the gameplay. They had a perfect template to use here with the Deadshot missions in Arkham City, and instead you're taking scanning an area for a cat plushie to take a picture of. Awful.
- The actual 'side missions' were incredibly generic outside of the Tombstone and Screwball ones. I'm not even asking for them all to feature named villains, but tracking the down negged college kids several times was not fun.
- Some of the Research Stations are okay I guess, but most of them are pretty dull. I also wasn't a fan of how every single one of them was so over-the-top in it's risk to the city.