I feel like the show should've leaned more into the butterfly effect as to why Peter can't just do whatever he wants
They took away Peter's power in season 3 because he was too OP, yet also introduced the butterfly effect concept that also said there would be consequences. I hate they didnt lean more into this, and showed that Peter had to carefully calculate events in order for things to line up, including letting certain ppl die much to his dismay. If even one event out of place, he has to start over and find a new way otherwise they'd end up with a horrible future if he just does whatever he wants with his powers attempting to solve problems whilst also dealing with grief that he had to let some ppl die only for it to be for nothing as he has to start a new plan from scratch. I can't believe they essentially set this up but took away his powers.
Even better if he's a side character during certain arcs where he's carefully manipulating events behind the scenes whilst others take stage, even evolving his initial powers to absorb abilities to also be able to give other ppl powers because he needs them to.
In other words, he's basically Doctor Strange in Infinity War using the time stone to see the future.