You said it yourself:
The Daily Show would provided just such a venue, no doubt about it. Does she really want to be president? Questionable. Is she willing to go into an unfriendly environment? Highly questionable. Could she handle herself in a competent manner? Even more questionable.
Of course, she could prove me wrong. If she does, then maybe she really is presidential material.
But, I'll believe it when I see it.