Hopefully Marvel will take note when the game doesn't sell as well as they hoped and include the X-Men and Fantastic Four in future games. They been left out of LEGO Marvel Super Heroes 2 as well which really pisses me off because the first one had some great characters that won't be returning, I probably still buy it as I'm a massive fan of the LEGO games, the story sounds pretty awesome and as a massive Spidey fan I'm really excited with some of his characters that have been announced so far (I just hope Scarlet Spider makes it, either in the game itself or as DLC like he was in LEGO Avengers.)
As for Marvel vs Capcom, never really been into that style of game (with the exception of Mortal Kombat, Injustice and the WWE games) and the exclusion of the X-Men and Fantastic Four make it certain I will not buy it.
I think it's more likely they'll crossover into the movies rather than Spidey showing up in Daredevil Series 3 or elsewhere. Personally I'm kinda expecting Matt Murdock to cameo in the next Spidey movie but what I'm really hoping is that Kingpin will get to be a villain in a future Spider-Man movie and he'll team up with Daredevil to bring him down for good. Though they might avoid something like that given how dark the Netflix shows are in contrast to the films and even Agents of SHEILD.