I am interested in hearing how people are using the new workstations in 1.14 and which ones are considered the most useful.
The answers will depend on the player's play style of course. I have seen YouTube videos that called the Composter useless, but that is currently my favorite new block. Why? I don't fight a lot and I don't farm mobs, so I don't get a lot of bones from skeletons. On the other hand, I love flowers but hate picking the landscape bare, so I want a lot of bone meal to grow flowers. Also, I don't use automated farms and plant everything manually. The surplus seeds I have left over were always a nuisance to get rid of. Now after harvesting I just dump the seeds into a hopper that feeds them into a composter and get all the bone meal I need with no effort at all.
Now if only you could throw eggs in composters or trade them to farmers in the java edition… I'm still struggling with surplus eggs.
My favourite is the Barrel. The block alone is a nice storage block, and a good substitute for chests. The Fisherman villager alone was decent to trade for extra emeralds while fishing. My complaints are the first tier trade with the fisherman: it's mostly painful and tedious (sell strings or coal for emeralds, or buy a bucket of cod for 3 emeralds).
the next few trades, though, are easy emerald farm when you fish a lot (sell cod, pufferfish, tropical fish for emeralds). And highest tier trade allows you to trade single Boat for an emerald,made of certain wood type depending on the biome the villager resides in.