Trump should not agree to a debate on ABC unless Kamala relents and agrees to debate on Fox. We are always playing into their hands. The June debate was unusually early and was just to get Biden off the ticket
I still like the idea of Trump having the Fox debate with an empty podium for Kamala. Ask Trump a question, and after he answers it, ask the same question to the empty podium. When there's no response, then say, "The Democratic candidate has no answer. Then asked Trump another question. Rinse, Lather, Repeat.
IMHO she’d probably rather not debate at all. And since she won’t debate on Fox, Trump should hold a town hall that night instead.