I think pacifier is ok.. If it gives the caretaker some form of sanity and able to stop bb from crying over nothing. Initially I was very against the idea of introducing pacifier too and was extremely irritated by my mum trying to insist I should give it to my #1 cos she kept wanting to look for something to suck and my mum could tell I was already very frustrated over marathon latching. When I gave in, slowly came to acceptance than as long as it pacified both my baby and I, I'm all for it.
Of course it was also I didn't allow #1 to have her pacifier stuck to her mouth perpetually. She will only have it during nap time or bedtime, to replace my nipple cos she nurses to sleep. Once fall into deep sleep, the pacifier would either drop by itself or I would remove it. It's an acquired skill to be able to quickly unlatch successfully and then quickly stuff the pacifier into her mouth, she also tends to bite me unknowingly after she fell asleep so I'd rather she bite the paci than me