AHHH thanks Kurenai, and so there's my "healing" idea out of the window. Not gonna lie, that Easter Cactus is looking pretty darn good. And so here's my updated list of possible candidates; I can only pick ONE, too bad x_x :

Nightmaher (Counter support, Safforn tier girl)
Easter Cactus (Healing support)
H. Peony Halloween (Crit + ATK Buff + Debuff)
Tall Stewertia Christmas (Crit support, 150% cit dmg to self AND small buff to team, and 40% react)
Cactus (Crit buff and a huge 60% React chance)

So I dunno, I currently have a base/foundation for my Debuff and Counter team. Perhaps I should continue building on those teams? OR, start building a crit / react team...? Which ONE girl would have the most impact in a team? Other girl suggestions are welcome too