Well definitely go for Outbreak and any other exotic quests. Idk if you're like me and don't enjoy the whole social aspect of this game but there a lot of quests and weapons that can be obtained with no communication at all.
I'm not gonna do raids because i don't know enough folks IRL who'd play this game. Not gonna bother with voice chat with people i don't know, that's just how things are these days. Hell, it seems like most of names people use are vulgar or racist (or would like to be), far more so than back when the game was on Battle.net. Really doubtful talking to people who use stupid names is gonna be good.
And chat's just too clumsy in a shooter like this, a matter of game pacing.
Otherwise, i've done almost every single quest. Few older pinnacle weapons i still got quests for... but i've never really liked any i've done previously. Outbreak Perfected is the only exotic one i'm missing that doesn't require raids. OK, there's a new bow next week, but i'm not terribly interested as i don't particularly like using using bows. Will do it probably, provided it doesn't require PVP.
Gambit's fun but not the sort i want to do only, plus while my connection will be having issues (ISP stuff, gonna take a week or two), it won't be enjoyable mode.
Other PVE stuff is just too easy for most part. NF Ordeal was interestingly difficult at first but with my better gear, it is not longer that difficult, really stupid the higher difficulties don't have matchmaking.
Vex Offensive is the same every single time, just and easy stomp. Why doesn't it have different routes or objectives? Feels like half-assed mode.
Menagerie's bit too much of a stomp as well. At least it varies a bit.
You get a nostalgic engram every 5 season pass levels after you reach 100
Ah, thanks.