I said they implemented the mini-block chain which is a technology I like, but I never said the Cryptonite (not Cryptonote) had compelling a feature set that made it a wise investment.

One feature wonder coins are not necessary sufficient to sustain against the network effects of Bitcoin. It is up to you all to analyze that further.

Pruning of the blockchain is apparently technically plausible for Bitcoin and some apparently effort has been applied investigating that. Will probably be less efficient than the mini blockchain.