I think i finished about 70% of the content so far. The main questline sucks except for two missions, most faction quests have an interesting premise but they either have nonsensical outcomes or end prematurely (Strikers, Vanguard, and Rangers). The best questlines are Ryujin, Crimson Fleet/Sysdef, and the colony ship.
Companions suck big time, probably the worst i've seen in any game, they all have the same goody two shoes personality, so good luck trying to play a morally grey or evil character without hearing them bitch and whine every ten minutes (space karen will even bitch at you when you ask certain types of questions or make sarcastic comments). There are quite a few interesting characters that could have worked well as morally grey or evil companions, like some characters from sysdef, ryujin, and the strikers, but instead we ended up with the most boring characters in the game, thanks Todd.
Worldbuilding and lore are nonexistent, many of the factions make no sense, especially the space cowboys who live in a bunch of mud huts and somehow ended up defeating the most advanced faction in the galaxy. Creature design is forgettable and uninspired, I don't even remember a single one of them. Don't waste your time exploring planets, there is literally nothing to see.
Overall the game makes me want to play Mass Effect or the Technomancer for the proper sci fi experience.