It would be great to be able to do the following in sermon builder:
Format text fully including customizing call outs and block quotes
Being able to add tables.
To build your own formatted and design layouts for hand outs for questions to match church branding and letter head.
To be able to fully edit slides more easily and intuitively. Complete control over text and being able to dynamically link text boxes the way you want. Such as being able to make slides from questions on handouts leaving blanks empty and formatting answers separately if desired for a separate slide.
I really like the sermon builder, but need more functionality and ease of use to make it my one stop shop for sermon prep.