Okay, scratch the Town reclaims funds after a set period of time for dead accounts. Personally, I don't care, as you still have 50% of the M/CK market to play with for bounties and crowdfunds. It just seems like you have a LOT of dead accounts in the game and since you want to get as much M to town as possible, this is another way to do it. You could also consider a "tax" charged per real game year on inactive accounts, like say 10% per year, if you don't want to deplete those accounts all at once.

Yes, the M to CKM and CKO option is best as it addresses the issues some have with ownership tokens as well as arguments that an in-game currency should not also be an ownership token.

You would air drop the tokenized CKM (and CKO too, if you choose to tokenize it). I've already outlined how M to CKM and CKO would work above. There are tons of airdrop code out there. You just have someone act as an exchange/wallet and have the code where the funds are sent in and out upon request. Gringotts could do this too if they wish, I don't care. It's like any token distribution. You could probably even partner with an exchange in some fashion for them to handle the operations and you just use a block explorer to check balances.

The easiest thing is to just have two tokens, CKM and CKO, both on ERC23 or whatever. If you have to choose one to not tokenize, don't tokenize the ownership token (CKO). But really, as you are giving people the same % ownership in both CKM and CKO as they have in M (at least at the start), I'd say just make ERC23 tokens for both as you've already gone through the effort on the first one.

In regards to exchange, should be easy to get added to one of the low level ones like YoBit for now.