Yep. I finished them all up a while back. I just saw each zone NPC offering adventures for purchase and assumed they were new. Bought the EDZ ones and quickly realized they were just the same ones I had already done. I just wanted to make sure there wasn't a reason I didn't know about to repeat them.
Another quick question for the vets just to make sure I'm doing things right. I'm at this awful point (278) where I don't seem able to upgrade anything. Everything drops as 270. I have two pieces of gear that are 274. I just had exotic boots drop that were 280 (so 275 base) but my boots were already 275 so no help there. Was it possible for this exotic to end up higher than that and I just had bad luck? I understand that Tuesday comes and the real upgrade path is through the "powerful gear" turn ins. But right now my only upgrade path is through extremely lucky exotics? Either a power weapon/boots (the two 274 pieces) or a duplicate of my exotic helm (which is 277 so a new one would be 280)? Just seems almost impossible to jump over the 280 hump right now. I definitely would have handled turn ins better had I known what I was doing. But first character so whatever. Tuesday is just right around the corner I guess.
Did they change stuff for PC? NPCs don't "sell" adventures, they are just orange flags on your map you can run one time and are sort of story extension little 10 minute solo things. They are kinda fun to do and give you more lore but thats about it, some blue loot and tokens at the end. The only thing planet NPCs do is give you a single blue quest (which leads to an exotic at the end), sell some crap green gear, and let you turn in planet tokens which turn into purple engrams.
But yeah you are pretty much stuck, the only ways to level once you are done with your powerful engrams / nightfall are:
1. exotic engram drops which are always 5-15 levels above your LL and come with a +5 mod always. Farming heroic public events is the fastest way, around a 5% drop rate (so every 20 hPE's should give you one), pop the "moar l00t" thing that Tess @ Eververse sells if you are gonna farm for 2-3 hours. Farm either the weekly planet PE (Io this week I think) or just farm on Titan, after you immediately finish a PE fast travel to the exact same spot and you can usually catch a second PE going on if you have a good NAT connection and play in a region where a ton of other people play at the same time.
You can use exotics as infusion material, so for example if you have 280 boots and you get a 295 peacekeeper titan boots (SHITTY boots) its really 290, and you can infuse your 280 boots with it to up them to 290. All exotics, once you loot them once, are available in your vault to pull back out at light 270 for like 10 shards in case the meta changes and a previously shitty exotic becomes better so don't be afraid to infuse exotics into stuff, there is no reason to "hoard" exotics in "case" you might equip them later, like potions in RPGs.
2. do the raid. You can easily do it at 270+, there is literally zero difference between someone 280 and 290+ for the regular raid. The enemies start at light 260 and end at 280 for the regular raid, something similar for prestige (280 to 290? not sure). I'd really jump into the raid via LFG --
Destiny LFG -- today if you haven't done it yet, its relatively easy and pugs can clear it no problem as long as everyone is 270+, even if you just do the first 3-4 encounters that'll be some loot, some tokens, etc. If you loot all 4 underbelly chests in the raid you are GUARANTEED an exotic, and just clearing the first 4 encounters will give you 4 key chests.
3. do trials of the nine with 3 other people, on weekends. Trials is currently shut down unfortunately due to exploits, re-opens next weekend.