I’m going with…. Maybe. We don’t know enough about the activity or boss tuning for anything. The armor/weapon buffs and selected exotic enhancements are likely only going to improve things to make them more fun, but I don’t think they’ll be necessary to do any of the new content. I could be wrong though and you’ll be booted from every fireteam and all requirements will be “new gear only.” There won’t be anything definitive until it’s released so you’re just gonna have to wait it out if you want a true answer.