Thank you for your post.
At this time, you cannot change the font type nor the font size in the Layout pop-up.
Please take a moment and enter this as a suggestion on our web site. Go to:
I could copy and paste this request for you, but there are questions asked that only you can answer. Also, when entering the suggestions, please explain why you want this. From past experience, our Product Marketing department seems to pay more attention to those suggestions with real-life examples.