Ghost ; In the end of year DMM FKG will provide some short time promos as a celebrate.
Last year deal kind of like this...

On New year day you get a short time special deal. (Deal available only for 4 days)
A 3000 DMMpt for 11 roll that guarantee 2 girls will be 5* or higher. (Can get dupe)
Bonus with 15 gems, 1 pink blossom heart and some kind of medal I think it's gift.
A 5000 DMMpt for 11 roll that guarantee 3 girls will be 5* or higher. (Can get dupe)
Bonus with 30 gems, 1 gold skill and 1 gold slot.
A 10000 DMMpt for 11 roll that guarantee random 1 rainbow that you don't own.
Bonus with 75 gems, 1 rainbow skill and 1 rainbow slot.

They first year (2015) of this deal more... b******... I don't want to talk about it.
This year they may use same reward or maybe improve still don't know.

About new evol low rarity system, I'll wait and see how dificult to do.
But I think it won't be easy.