Medicurius is a really good new boss monster for the deck. We been needing a good link 3 water. This deck can pull him of pointing to 3 pretty consistently. Haven't tested against handtraps yet.
Kashtiras are just really good tribute fodder. Mostly for Emperor penguin.
Mulcharmy Purulia can be discarded very nicely with Icejade Aegirine or literally any other discard effect.
P.U.N.K JAM FEVER can be xyz summoned on the opponents turn using full armored xyz. If you want to do it more often, more of the level 8 P.U.N.Ks would be helpful.
Horus also works pretty well if you want to run em. They can be used to summon JAM if you REALLY want to. It's a thing I guess.
Graydle can be used in conjunction with First penguin to search P.U.N.K rising scale.
Comments and suggestions welcome!