After recently adding Pocahontas as another Timebender, I unexpectedly, suddenly realized one round of timebending felt very productive (~600-1k mist bonus) -- not too grindy, not too easy. Plus the other roles are sufficiently filled that I get what I need from extra drops. I'll likely add future characters as timebenders, but might start bolstering the other roles or swap now that I know who is fun to hang with.
PS: Obviously this is super subjective to my gameplay style. But I craft a lot (mine/dig), am rich (pumpkins), and the grind for event fish isn't too terrible. So, if anyone else wanted a measuring stick for assigning roles, hope this helps!
PPS: Everyone's level 10 unless specified.
19 Timebenders: Minnie, Moana, Scrooge, Tiana, Nala, Stitch, Mirabel, Vanellope, Mulan, Aladdin (level 6), Lady, Tramp, Pocahontas, Eric, Gaston (level 9), Rapunzel, Eve, Merida (level 6), Hades (level 7)
10 Garden: Mickey, Merlin, Fairy G'Ma, Remy, Jack, Buzz (level 9), Woody, Beast, Sully, Mushu (level 7)
5 Mine: Belle, Elsa, Kristoff (obviously), Maui, Scar
4 Dig: Anna, Wall-e, Olaf, Momma Gothel
4 Fish: Daisy (level 9), Donald, Goofy, Simba
Wow also this exercise was a good reminder that not all villagers are at level 10 (sorry Daisy!), and I have access to 23 more unassigned characters (14 main / 2 eternity / 3 storybook / 4 WBR).