IMO the key is: the right husbandry for the right snake! regardless of what seems correct on paper, your snake will tell you if it's right or not.that's why i think it's a good thing to be well-informed first (i.e. listening to the advice from others with more experience on what works) and then experiment to find what works for you as well as the snake.
my 0.1 Super Cinnamon (Coffee Bean) came to me as a 70g worm, and was moved into a bigger tub less than 48hrs after arriving; she ate that same night.
i deep clean my T8 for Yellow (1.0 2014 Albino) every spring to try and jump-start his eating. this year it actually worked! for 3 weeks LOL. but that's a lot for him; 3 weeks on feed in a row!
EDIT: Spaghetti (0.1 2016 Coral Glow) requires a silk leaf vine in her tub to feel more secure. when she was first moved into the rack she refused for a while and seemed restless. i put the vine in and she's been eating sort of regularly LOL.
it's about knowing the animals, but i swear by the clean enclosure trick. i'm glad it's getting more recognition recently; i can't believe it wasn't more well known!