One thing that I always look forward to with new expansions is roaming around the new destination doing public events,lost sectors and the occasional patrol beacon(and seeing other players doing the same too). The Pale Heart is a cool destination but feels lonely being a solo destination, Keplar is even worse because it has absolutely nothing to do when roaming around which makes it so boring and not worth going back to. Renegades doesn't even have an actual destination it just has a social hub and 6 activity maps(which they all look cool) which in my opinion absolutely sucks. I personally would have enjoyed patrolling Mars for hours doing public events and lost sectors. I know everyone doesn't like roaming around in patrol zones and I think it's because(not that I'm speaking for anyone else) you Bungie never do anything to update them with new activities that drop meaningful rewards to chase. You know that the Court of Oryx and Archon's Forge activities which took place in patrol in D1 were popular as well as how popular Escalation Protocol(mainly because it had its own lootpool) was in D2's Warmind expansion and yet you don't add these types of activities to other old destinations. Even the big Vex invasions on the Moon during Season of Undying made the Moon more enjoyable to patrol. Things like these could help make the destinations more enjoyable as long as they have their own loot to chase and also help power progression. Anyway this is just my own opinion.