F2p player here.Regret investing in koaki.i started in december and didnt know when would the banlist change ,didnt expect that it would be this month.xD
If you just started in Dec18, I would recommend you to start new account. With this ban list, there's no way Koaki will become competitive from now on. So you don't have to waste those gems on the deck that will be no use since 25 Mar 19 till world's end.
Go for Mask Hero, the deck has a bright future as Dian isn't even release in main box yet.