I was recently thought about if there has a 2002 Spider-Man movie start up the universe if Marvel must developed their MCU as soon as possible, but I don't have to make that story.
Because MCU become much popular and powerful because of their legend: They had raised different kinds of characters to make them amazing, even if some most popular characters had been sold like Spider-Man and X-Men. I thought that's only way to raise a good MCU. (Actually I like Captain Marvel, that hero brought be here and the reason I've became a Marvel fan.)