I'm only 20 hours into Starfield and barely completed my first faction questline lol. UC Vanguard was a pretty cool questline albeit kinda predictable tbh, but the reward is totally worth it! Gonna go join the Freestar Rangers then probably do a few more main quests before joining the likes of the Crimson Fleet and Ryujin. From what I'm hearing, probably going to save Ryujin for last