Decreased privacy for everyday users. Increased privacy for those with the time, resources, and incentives to find ways to orchestrate transfers that can't be tied back to them. In other words, the worst of both worlds.
https://www.aclu.org/blog/privacy-technology/consumer-privac...
Bitcoin is a public ledger. It is AT BEST pseudonymous. At best.
Then I will make two other secret transactions with the CC and the BTC wallet. You can each then try to identify the targets and the sums spent in the secret transactions.
Whoever identifies gets some sum of money from the other. I'm happy to escrow for you.