I'll give them props for including a lot of the big draws in S1. We pretty much got one of everything significant in KI1: Beast, Elemental creature, Super Science, Normal Humans, the requisite female, a horror / popular movie themed adversary, a minority of Color... Not bad.
Combo, Cinder, Riptor, Maya, Kim Wu, and Tusk fans seem to have to wait until S2. With space for 2 new character, or the bosses of old (which I don't exactly think many care THAT much about...). The actually match up pretty well VS the types we've gotten now... we pretty much got the more popular / more unique version of each type within season 1.