Taffer:
I thought I had optimized my labours, spending hours to go over each dwarf to give them suitable tasks. Sure, 30 seconds to enable main jobs, non-moodable non-quality tasks, disabling hunting/fishing, etc. and then going to next dwarf in line is not much - but it adds up, especially when done several times.
Then I found therapist.
- I could go back and undo the changes for which plans changed without spending 20 minutes to go through every dwarf to find the 3-4 dwarfs whose plans had changed.
- I made something like 700 labour changes to ~77 dwarves in 15 minutes. Doing it again, I could do it even faster. That is about 1,28 seconds per labour - and this after I thought I had optimized their labours over many hours before!
- I now can set up mood-preparation and non-mood dwarf's labours easily with pre-set professions, which further reduces that time.
Did the fort efficiency improve? Indeed. Though the 20% or so I'd guess from idlers isn't prohibitive, an experienced user could likely manage better.
I'd prefer if therapist was tiled the other way, though; I feel it takes focus away from individual dwarf a bit.
Other examples:
Loading up a succession saves. Ok, so what do the over a hundred dwarfs do, what does the fort specialize in?
- piles of dabbling glassworkers
- half the legendaries have their legendary skills disabled - there being other dwarves to work on those jobs
- some are legendary in military skills rather than production
- sixth of fort seriously unhappy.
- another fort: everyone had just 1 labour, no labour having multiple dwarves for it
- all labours, including hauling, disabled on 2 of them (using dfhack's autohauler*, I never pay much mind to hauling).
- Melancholy blacksmith from failed mood.
Sure, I'd discover those eventually without DT too, with a good memory or my own spreadsheet. But eventually is also when the farmer is taken by a mood, when one notices that there is just 1 dwarf mining out the new living complex or when the designated refuse hauler punches mayor in the neck. Can't really get around looking at least selection of dwarves in a succession fort if you want an idea of what it does.
* One day, I'd like to test the autolabor in full, tbh; A fort without direct dwarf management would be a curious thing to try. Crap for moods, though.