First off, your not gunna start at Lvl 20 come September 15. Your gunna start at the Lvl you are at now ( so if it's Lvl 20 idk what your doing with your life cuz it's easy to get to Lvl 32). Second, farming exp was exactly what I was doing my first few months in destiny. I was Lvl 24 and had no idea how to get a new light Lvl, no idea how to get legendary gear, and no idea what strike playlists were. I was just doing the vanguard bounties every day thinking it would help me. So I'm literally a master at getting exp. Third, the gear that we currently have is still going to be a viable option for their corresponding activities. It's better to have the increased agility from your Crota boots when your a sword bearer. It's faster to destroy oracles in VOG with a VOG weapon. And we all know that a shank burn on a void HOW rocket launch is the best thing since sliced bread. Our gear will still be useful and it's still looks sick ( besides poe guns).