Now the old boring Wandering Traders in your world doesnt have to stay that way ! They can be old boring villagers instead ! (atleast villagers are useful).
You can now turn Wandering Traders into villagers that has jobs(or nitwits that sleep all day) with their respective job site blocks(bed for nitwit).
All you need to do is Sneak[shift by default] + [Right click the Job Site block]
Lectern - Associated Profession: Librarian Loom - Associated Profession: Shephard Cauldron - Associated Profession: Leatherworker
[1.16.5-1.20.1]: White Bed - Associated Profession: Nitwit
[1.21.1-1.21.4]: (dont ask why it has to be a red bed on 1.21.1+ i have no idea either) Red Bed - Associated Profession: Nitwit etc.
IMPORTANT NOTE: Converted villagers start their job at Apprentice(lv2), but if you want to level them up to Journeyman(lv3), you still need to fill the Novice(lv1)(hidden) xp bar to start filling Apprentice(lv2) xp bar
Also now they sell;
coal,raw iron,raw gold,raw copper,bucket of powdered snow,honeycomb,enderpearl,firecharge,iron sword,iron pickaxe,iron axe,nether wart, soul sand, endstone
Some trades for 1.16.X are replaced with; Iron ore, Gold ore, Snow Block
