dkbit98 brought this up in the other Wasabi thread a few months ago in regards to forking Wasabi to avoid its censorship, blacklisting, and surveillance: https://bitcointalk.org/index.php?topic=5405325.msg60551095#msg60551095

My response to your question now will be the same as it was to his - there is no point. We already have a better coinjoin implementation called JoinMarket as you point out, which can be used right now. It does not spy on its users, it does not support blockchain analysis, it is not pro-censorship, it is not reusing addresses. If a user (or group of users) have the requisite knowledge and skills to contribute to a coinjoin project, why would they take a fundamentally flawed project and spend their time mitigating these flaws, when instead they could choose to just contribute to and help develop a project without such flaws?