Yeah. I really like Rose too but she suffer too much of being and old 5*... and the first 5* counter. Like many other girls from the begining she is a but unbalanced. She is one of these girls usable only on main quest or event missions.
About Miko Pink, she will have her 30 FG gacha for rarity growth sooner or later. That's a good occasion to get her easily with possible dupes for more slots.