Hello there, folks.
I've had a real blast with Bannerlord over the last month. It's incredibly fun to play.
That said, it's an Early Access and it shows. Although the first impression may look like a finished product, well it's not. Too many perks are not working (iirc devs actually said they're not happy with how the system works and will probably overhaul it entirely), too few quests, random wars and no diplomacy whatsoever (haven't tried the latest update, heard there were some changes), etc etc.
Overall I'd say they have built an amazing foundation to build upon. A year from now, we may be talking about one hell of a game, when it exits the early access and becomes a full release. Also, considering the size of the whole world map, they could keep adding content for a very, very long time (more factions, etc.).