Problem is, that's not what this is all about, consensual relationships. It's about using campaign moneys to silence two women and influence the election.
When Edwards was found to have used campaign finances to conceal his private affairs, that was wrong and he was indicted on felony charges.
Now Mueller either has the goods on Trump or he doesn't. Trump is obviously nervous about this as his tweets suggest.
If in fact Trump/Cohen used campaign moneys to hush these women to influence the outcome of the elections, then he should be charged. This would only follow what R's had pushed for with Edwards. Though not the same on influence, Trump is in deep doo-doo if Mueller can prove this happened.