The title "caretaker" is pretty broad in terms of what it could mean. There are daddies, mommies, big sisters, big brothers, doms, and so on and so forth. Not every caretaker is comfortable playing certain roles, but on the other hand, not every little is comfortable with certain caretakers. While I've only had one experience in being babied in person, it was enough to let me know that I don't like having a daddy or a big brother take care of me. It just doesn't put me in the right state of mind, and I feel awkward calling someone by those names. Going further, I don't like it when I'm constantly teased and baby-talked at.
I think what I want in a caretaker is a babysitter rather than a mommy or daddy. I feel like with that label, we can be pretty normal around one another, but he or she could throw in the occasional demand, diaper rub/pat, hair tussle, etc. that would remind me who's in charge, and make me feel cute/safe/protected precious when the moment is right, like during a diaper change or near bed time.
So, what kind of caretaker would make your ideal babying scenario work the best for you?