The Wandering Inn [1],
Stories of an alternate world somehow connected to a certain innkeeper of the said inn.
Features extensive world building, character building,
Lots of fleshed out characters, contains humour as well as serious stuff, has dragons, fae, aliens, time travel, hiveminds, automatons, cute pets, cosmic horrors, history lessons, magic, alchemy and steampunk engineering.
It's a bit longish and not finished yet, 2/3 done as of this year.
This sounds like a great series and one I'd definitely be interested in. Rothfuss (even more than Martin) has me shying away from starting another, currently unfinished, series.
It's a lot more likely that you will get tired of The Wandering Inn before you catch up to present than that you will run out of source material, I think
Started reading it one or two months ago, still on book 6. Enjoying it a lot, even installed Read Aloud to have text to speech and listen to the stories while doing some household chores.
The longest fantasy series ever written. Take all Stephen King books, throw in the entire Harry Potter series, and it's still shorter than the Wandering Inn.
I just gave up on the series after book 4. I felt the original main character wasn't getting enough screen time, and didn't really like the newer characters as much.
Features extensive world building, character building, Lots of fleshed out characters, contains humour as well as serious stuff, has dragons, fae, aliens, time travel, hiveminds, automatons, cute pets, cosmic horrors, history lessons, magic, alchemy and steampunk engineering.
It's a bit longish and not finished yet, 2/3 done as of this year.
[1]: https://wanderinginn.com/