Disney now owns the X-men, Deadpool, and Avatar and can now have a fully integrated Marvel Universe to write most likely much more dynamic storylines that can and most likely will have the X-Men cross paths with Spiderman or Iron Man.
I think overall this is a smart move for Disney, with their intellectual property growing and now includes the Star Wars Universe they have a very wide and vast array of characters from which to play with. They will have more content to include in their new streaming service and integrate into their theme parks, sell toys, and make money with other various way I am sure they can come up with.
Going forward I am very optimistic about the move, however, there does need to be more companies willing to take chances with introducing new characters for people to enjoy. I feel like now most of the best known characters are all owned by Disney, but lets see how this all plays out.