I do. Pre-4.0, I was still running base game capped at 50. It's a fun experience, actually doing most things near when intended. It's satisfying, being the lowest level in an unsynced T9 group, and seeming like the only one that actually knows how to stay alive. There's actually some challenge in trying to craft for some of the Master books. Overall, it's just a more chill experience, knowing you're not in a rush to the next milestone.
