It's a trap. There will be debates as long as there are "independent" fact checkers, no live audience to bear witness, and delays to allow editing.
President Trump should wisely decline such conditions, after which the talking points will be that he's "afraid" to debate Joe Biden.
I hope smarter people than I on President Trump's campaign are working this contingency.
Who is going to fact check? Will there be false fact checking such as Candy Crowley did in that Obama/Romney debate? What good is a fact checker if some media stooge gives us the wrong facts in real time at the debate?