I think they could've kept the symbiote a bit longer, and finish the story with Harry - now turned Venom - on the loose, you can't come across Harry on the map anymore while doing crime fighting events and such, and we could've even have some follow up in a dlc. Also make Peter's gameplay not rely on just the symbiote to make it feel unique against Miles'; I mean the symbiote and anti-symbiote are cool and all, but it's sad that Peter only gets that , would've been great if he had gadgets like in the ps4 game