In fact. What if Dark Star paid from a Chip Mixer chip every week instead of using the same Address? What if Chip Mixer members gave Dark Star a list of 10 Addresses and Dark Star paid them weekly in a random Address from a Chip Mixer chip. Just an idea.
I've thought about this, but it seems to be prone to error. Manually selecting 50+ addresses per week every week means thousands of addresses per year. The only way to rule out mistakes is by automating the entire process.
I've also thought of the possibility to be paid in CM chips directly, instead of on-chain, but that's also more likely to cause mistakes. It's much easier to leave it to the user to mix their coins if they want.