Everyone wanted decent movies based off superheroes (not counting the horrible Batman Forever with Val Kilmer or Batman & Robin with George Clooney) since the Blade trilogy, Tobey Maguire's Spider Man movies, and the first two phases of the MCU (Marvel Cinematic Universe, for those who don't understand acronyms) coming to a close with Paul Rudd's Ant Man releasing on July 17th (my 23rd birthday.) But as I pondered this "HeroMania craze" after the first Iron Man movie starring Robert Downey Jr came out in 2008, but after the 2003 Hulk with Eric Bana and both failing Fantastic 4 movies (which Chris Evans obviously made the excellent choice to go Captain America instead of staying Johnny Storm), most people would wonder "How long would it last to keep Hollywood afloat with this craze?"
"Hollywood could go dead with reboots, unneeded sequels to already great movie franchises, and extremely pointless movies, but the superhero craze will end Hollywood's life cycle eventually" -Me
Most people would think that this would go on and make Hollywood go into the 100 years of the film business a great time to be a critic. Me, to be absolutely honest: it may be the sign of creative abuse and Hollywood's downfall.
Why do I say this, you ask? Because stack up the Iron Man, Hulk, Captain America, and Thor movies of the 1970's and compare Downey Jr, Chris Evans, Chris Hemsworth, and both Edward Norton (Hulk/Banner 2009 Incredible Hulk) and Mark Ruffalo (Avengers onwards Hulk/Banner) and their Marvel parts, and you can bet your Hollywood bucks that these individuals were made for those roles but Hollywood should stop after MCU's Phase Three.
After that, don't even try to make a new MCU all over again. It doesn't make a challenge or money to waste on something that in Tony Stark's words "I shouldn't have to be told that there are some things that we're not supposed meddle medley"
To end all future thoughts of a renewed MCU, don't break something that already worked out.