I definitely wouldn't want to look suspicious. This might come of as a turnoff for innocent people wanting to use mixers. 
Because only a criminal would want some privacy.I get what you mean. But what I was trying to say is that non-criminals would probably stay away from mixers because of the fear of being suspicious to the feds or whatever government entity. Anyway, maybe I'm just overly paranoid and overthinking stuff
.Non criminals staying away based on your position will give credence to the misconception that mixing services is meant for criminals alone but that will be wrong even if I not been a criminal but value my privacy uses mixing services even if feds comes after me, they would probably do some investigation into my activities before coming at me and if they found nothing incriminating will they still go ahead and also I have not read anywhere that its illegal to send my coins to a mixing service.
I completely agree. If mixers like ChipMixer start getting more popular and even possibly get fully integrated into wallets such as was attempted with the Electrum wallet it would completely change the meaning of using one. Rather than them being seen by the average person as trying to hide something or as possibly money laundering, it could completely remove the negative stigma held against it. Furthermore, a more widespread usage of the mixer would also mean that because of the significant volume of mixing transactions, the actual mixing is much more effective, as there are more outputs and inputs that can mask any relations that could otherwise be found between multiple addresses or individuals.