Unless it is a "Spider-verse" situation where Tobey and Garfield are different Spider-Men from different dimensions, I don`t care. If it is just a cameo, I couldn`t care less. Cameos can make a funny gag or an interesting moment, but don`t make a movie good.
Although it is a "Spider-Verse" situation, it would make me a bit hyped. But then again, I was a bit hyped for Mysterio in the last movie, and it was in the end just smoke and mirrors. Ironically.