Form builder like in MS Access database
It would be fantastic to have the same type interface for building custom forms and reports as you have when using MS Access. The drag and drop options, customizing format, adding buttons, multimedia, short code and the ability to export out as a PDF while utilizing database fields would make life 100% awesome.
And as a standard feature
Mark Mayhrai commented
Judt want to suggest a more robust HTML editor with the HTML blocks, also probably a resizing feature which will allow you to adjust according to screen size and see how it go look.
That will jazz up things a bit.