This is one of the best RPGs I've played in recent years. Having not really enjoyed Mars Warlogs or Technomancer, I was about ready to dismiss Spiders, but GreedFall changed my mind.
The main reasons to play GreedFall are clearly the story and the world building. If you're looking for a lootbased game, this isn't it. If you're looking for the next Dark Souls, that will challenge you immensely, this also isn't it. That's not to say combat is terrible, in fact, I quite enjoyed it but, to me, it's not the main selling point of the game.
If you enjoyed Gothic 1 and 2 way back in the day, this is probably your game. The writing is great, the world is interesting and believable and none of the quests felt like busywork. All of the companions are well fleshed out and likeable (that might be subjective). The choices you make are meaningful and callbacks to things you did are frequent. There are a few twists that I did not immediately see coming, which seems rare these days.
I cannot say enough good things about the world building. Especially after how lifeless and bland The Outer Worlds felt to me, GreedFall's Teer Fradee and it's factions were a welcome change of pace. Even within these factions, not everyone is marching in lockstep and sometimes you might find yourself agreeing more with the natives and sometimes it might be one of the other factions.
A few words on "bugs" and "jankiness". Personally I feel people overemphasise that, for whatever reason. The game hasn't crashed on me once in nearly 50 hours and the worst bug I've seen in game was an NPC getting stuck for a few seconds before moving on. That's definitely no worse than any other RPG I've played and it didn't take away from the experience for me. The game also ran smoothly for me, but again, your mileage may vary.