Well it depends on what you want from that team.

One counter girl, even if its Saffron, wont make a difference in a Debuff team, because the main scource of damage comes from the counter itself.

Whereas one debuff girl in a full counter team can actually make quite a big difference.
At least thats what game and Wutan have been saying few pages back, hence why I want to include apple into my setup, since she counters and has a debuff as well.
I know mistletoe does it as well, but .... I just really hater her ultimate. Fckn huge cake dropping from the sky. Thats ... just weird. and boring.