Anything to worry about if you use mixers and not doing anything illegal?
Will any one come knocking on your door if you use mixers and not doing anything illegal?
Will posts like this be banned too after Jan?
Will using mixers be an expensive?
If the mixer, you used caught doing malicious activity and your address is linked somehow then you will have a problem but its highly unlikely to happen and if you have a proper source of income then you don't need to worry about facing legal actions.
But exchanges and casinos may flag your account as suspicious and will carry our further investigation if your funds deposited into their are from a flagged mixer.