UNC-CH is clearly not going to self-impose.
There’s absolutely no reason to self-impose anything. If the NCAA doesn’t like your self-punishment, then it will add more. If it approves of your self-flagellation, then you probably went too far (like State with Valvano).
I think that UNC made a huge mistake in withholding Prof “Roo’s pay. Their action proves that Roo’s actions did not meet UNC’s own academic requirements. Thus athletes that benefited from the paper classes should lose credit for those classes…and games played with ineligible athletes must be forfeited.