The Volcano Viper is a real example of a kitbash done right. He's got a couple of parts I think are new (the "jacket" and helmet, mostly), and the rest is made of existing parts used to maximum effect.
I hope to get another one if I can (who cares about the pods?), and get a couple of the orange version when it's released. It may not be the intended purpose, but I'm using these as the cool POC update of the Leaky Suit Brigade.