I didn't mention it because I'm pretty sure everyone knows about it - and i'm not convinced it will turn voters off from Trump. If they haven't been turned off by his actual presidency (and it seems like they haven't) his after hours shennanigans won't bother them too much. They seem to see him as a disruptive force for good - a view not shared by Democrats.
I think Republicans would be smart to run a female candidate, that's certainly what happened here in the UK. While the progressive left wing Labour Party still hasn't managed to elect a female leader, the right wing Conservative Party have now had two female Prime Ministers. If Donald ceded his place to Ivanka, it'd be a smart polling move. Just a hunch, but I guess only time will tell on that one.
I'm not complaining about Biden. He's not my President. I'm a Brit. What I'm trying to do is suggest reasons why notable leftists on this platform... like Jessica Wildfire and Lauren Elizabeth have complained about Biden.... If Trump comes back, a big part of that will be a failure of the left-wing to pull together a coalition of disparate factions under a leader. I'd prefer Bernie, but the Democrats seem stuck under a neo-liberal hegemony which is neither liberal nor new.