I can't help much, but do have a couple of comments:
1. I think mixing wet/raw food with dry is kind of a disaster. I'm not sure there is any merit in it, and it may make both unpalatable and unsafe to eat. If it works, cool, do it anyway
But it's not something I'd do personally.
2. I too have been kind of confounded by Serafina's attitudes towards food. She *loves* fish, pretty much any dry or canned or cooked human food containing fish, but she won't touch chicken or turkey canned food. When I feed her Radcat chicken or turkey (that is a raw formulation that I feed Gaga, that is mostly just meat but has all the other stuff in it like bone meal and all that) Serafina won't touch it, but if I cook chicken breasts or drumsticks or whatnot out on my grill (mostly for my own consumption) she goes *nuts* over it. She will wolf down a seemingly endless amount of it, and "beg" for it if she isn't getting all the she wants, or as soon as she wants.
So I dunno, maybe there is something there for you to try. Perhaps grilling some chicken may make it more palatable for them? And maybe mix that with the raw stuff you ultimately want to feed? I know that heating meat brings out the scent, so that is a big factor, but it seems to be more than that... she just seems to like it prepared that way for whatever reason
It might be worth a try!