Everyone loves this name but me...well, at least that's what it feels like. I have a friend who expressed her wish to name a future daughter Seraphina, but I just can't make myself like the name. It's 100% spoiled brat to me, like Genevieve.
I can still give you MN suggestions, though:
Seraphina Marie (filler, I guess, but it sounds nice.)
Seraphina Rosalind
Seraphina Jane
Seraphina Vivienne
Seraphina Marcheline
Seraphina Rose
Seraphina Chloe
Seraphina Marguerite
Seraphina Elisabeth
Seraphina Iris
Seraphina Amelie
Seraphina Amanda
Seraphina Emmeline
Seraphina Blythe
Seraphina Katherine
Seraphina Ernestine