I think it would require at least a softfork.  It might be hard to get consensus on something like this. Maybe if chain analysis gets perfected, then everyone might agree

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stackeraw

Haha, yeah I liked the idea after hearing PT mention that one time. There might be a way to do it, but I haven't heard it yet.

bitcoin

Dreaming about CoinJoin at protocol level

italiansatoshi

Man, with just few wisdow words you made my dream a nightmare 🤢
Anyway I've to totally agree with your points cause you're absolutely right expeciallt about block space and price to get into a block.
Sad is I have had a hard wake up.