Well I wasn't expecting this news of Spider Man joining the MCU (yeah I know this is going for a while but I thought it had fall apart) so this news caught me a little of surprised but that doesn't matter. I'm just a little concerned about this because the timeline of the movies from Phase 3 had big changes and some movies might be have to be re-worked on like for example Black Panther which now is happening after the first Infinity Wars movie (I don't know if the Black Panther would be appearing in the first movie if Spider-Man didn't come to the MCU but if it was they will have to change some stuff). And other example is that now it seem that it's The Inhumans who are closing Phase 3. It looked like they weren't expecting this change and were written all without considering Spider-Man's arrival but I believe Marvel can do a good work.
I really liked Andrew Garfield as Spider-Man (better than Tobey Maguire) and it will be weird to see another actor playing Spider-Man. I also really liked The Amazing Spider Man 2, the film everyone thinks it flopped. But moving on let's go to the fan cast:
This is in no particular order of interest.
He's not very famous but I really liked his character on the television series The 100.
Yeah maybe he should look a little younger but it's a fascinating actor as well.
This one seems to be in every fan cast of Spider-Man. Personally I don't know his work very well (I only saw him on Internship, still haven't saw The Maze Runner) but I believe he could be a good Spider-Man.
I would like to see him in a more serious movie.
Well this are my choices my top 2 candidates are Thomas McDonell or Dylan O'Brien. Or they could go with someone relatively unknown.