I love Spider-Man he's without a doubt one of my favorite superheroes and i believe you can understand why it's because he's AMAZING! sorry couldn't help myself, anyways i have some ideas involving him, also spoilers for somethings
My idea what could happen in 'Spider-Man: Beyond the Spider-Verse' is that we saw in Miles's vision of the future there will be many Spider-people killed by The Spot and maybe there seems to be no way to stop him expect Miguel O'Hara tells Miles the only way to stop The Spot is to prevent him from gaining his superpowers meaning time travel as Miguel in the comics has the technology and since here he has the technology to travel to other universes it isn't to far fetch, Miles travels back in time and stops the original anomaly meaning stopping the Spider from biting him and instead bites the Miles from Earth-42 allowing him to become the Spider-Man of his universe while the Peter Parker of Miles's universe lives and stops the Super-Collider causing The Spot to never gain his superpowers however as everything has changed Miles thinks that he's going to be erased as we have seen in the third film the hero gives something up like on in the MCU Peter makes everyone forget him and he's okay with it because he's thinking about of all the lives that he has saved but just as he think he's about to disappear that is when he's save by Gwen, Peter, Miguel and everyone else, afterwards Miles and everyone travels the multiverse and stops any anomalies and maybe Miles even becomes the Spider-Man of Gwen's universe since there isn't one and the two get together.
I think the reason why Miguel doesn't have a problem with Peter's daughter Mayday Parker is because maybe even without meeting Miles and events of 'Spider-Man: Into the Spider-Verse' is that Peter would have still get back together with MJ as perhaps something would have happen in his universe that would have given Peter the push instead
I think Tom Holland is great as Spider-Man in the MCU however i also think that Sony should have another Spider-Man from the Sony-verse maybe bring Andrew Garfield back for 'Amazing Spider-Man 3' but the problem with that is in Amazing Spider-Man 2 we saw The Rhino in that film who uses a rhinoceros-esque militarized battlesuit meanwhile in 'Kraven the Hunter' there is The Rhino in that film as well who uses a serum to transform into a Rhino, the only i can see that work is by saying they are two separate people and the new Rhino uses a similar serum like The Lizard
If they don't bring back Andrew Garfield for 'Amazing Spider-Man 3' then they need a new actor and i think they should do something similar to what they did with Tom Holland Spider-Man where they don't need to show us his original story and this new Peter has been Spider-Man for a couple years think like in 'Marvel's Spider' where he has been Spider-Man for eight years and this way you can say his other villains already exist in this universe and this new movies could called 'Spectacular Spider-Man', as for a love interest instead of MJ or Gwen Stacy they should do Felicia Hardy aka the Black Cat plus this way they could even do a Black Cat solo movie that takes place before the first Spectacular Spider-Man film and at the end she's get told there's she might be interested to steal in New York but gets warn about Spider-Man which gives us our first look at this new Spider-Man
Also if Marvel allows it Sony could even say that other variants of Marvel characters exist in this universe like maybe Tom Cruise as a Superior Iron Man, instead of Steve Rogers as Captain America it's Captain Carter or even Bucky as Captain America since he did take up the mantle in the comics and others and maybe even instead of the Avengers its the Ultimates in this universe? They don't actually have them appear but just say they exist and have some references to them?
I think Miles Morales is a awesome Spider-Man and he was great in the game 'Marvel's Spider-Man: Miles Morales' and will be in the next game and Marvel Comics is bringing back the Ultimate Universe which is Miles's original universe but it will be different, and in Ultimate Invasion the Maker aka Earth-1610 Reed Richards stops this new universe version of Peter Parker from getting bite by the spider and becoming that Earth's Spider-Man so what if the Miles Morales of this universe becomes the original Spider-Man instead of him taking up the mantle or sharing it with Peter? and while this new Miles is Spider-Man the Peter of this universe could either turn into one of his villains like in the Spider Gwen universe or we see things about him in the background where he has a normal life and maybe start his own company Parker Industries in this universe
Currently in Marvel Comics Peter and MJ have broken up and she's with someone else call Paul Rabin and they have two children together and everyone hates what's going in the Spider-Man comics but my idea to fix it is to have to Paul isn't actually who you think he is where he could turn out to be a demon from that alternate universe and he has trick MJ and Spider-Man to bring him to their universe but once he got here he's weaken which is why he has continued to pretend to be human so he could regain his lost power? I now this feels cheap but this is the best i can think of to undo everything expect Spider-Man is now currently dating Black Cat and it would bad if he just leaves her to be with MJ