Yeah, no. You're thinking or the Haas effect, which sounds like shit, and/or phase effects, which sound like shit, and they are just another way of noobing up your gain-staging logic.
The waveforms still gang up.
Your idea of thickening up tone sounds like you were too lazy to do multiple takes. Which is also a poor, sad excuse for not getting a good source. But then later attempting to mix it.