I might also join the development. While I have relatively little extra time to spare, so I can't promise anything big (do not expect stuff like smart contract ala Ethereum - that would require more or less huge rewrite of the protocol and in the first place fixing all the problems Ethereum has - there are many ways how a smart contract user can "shoot itself in the foot" and lose coins and there are many challenges also from the programming perspective and it is very hard to do the contract so you get some compromise between how powerful the contracts will be and how long will it take to verify them, etc ...)

Good thing about CACHe is the durability of the coin - due to its variable PoW + PoS it survived very well both times when there was a lot of interest in the coin and also times with minimal interest in the coin.

When comparing with other coins, what is missing in CACHe is the 100% fungibility - while bitcoin is relatively anonymous, current governments tend to regulate the currencies and if they will start having "blacklisted" (i.e. those that were involved in some hack, or criminal activity or whatever, so coins that were touched by some criminal in the past may be "tainted" forever) and "whitelisted" coins, then this could be a major blow to usability, as coins from many BTC hacks are already dispersed in the blockchain, often they are partially in wallets of people not connected to any of the hack.
Having fully anonymous transaction will ensure 100% fungibility -- all coins are equal, there would be no "tainted" coins

In order to not reinvent the wheel, the code could be "borrowed" from other coins - there are several candidates, like ZCash (although it does have relatively complex setup), DASH (no complex setup, but you have to add the masternodes infrastructure, which is quite complex) and few other coins I have currently on my watchlist.

I may also create a mining pool if there would be interest