JFarrell71
SasqWatch
The Ryujin questline is the longest, but the first half is boring padding. It gets good over the last 6 or so quests.The only major quest thread I didn't do was the Ryujin side quests. I started them, then realised I wasn't really feeling it.
I don't know if you forgot them or just disagree, but there were other good, non repetitive artifact collection quests. Among them the
quest with Stroud in Neon, and the Petrov one with Barrett