Great application. The interface is uncluttered and intuitive, yet has everything I need. I used it to generate a character sheet for a custom system, and it took me less than two hours - including auto-fill values!
There are a couple of features that would be very useful. First, I would like to have the option for a border for text fields. I know that I can manually put boxes around each one, but that takes time. Besides, if you snap to grid the box size does not match the field's area, so the aesthetics are off when you view and use the sheet. Second, which would be more work, I would like to be able to export as a fillable PDF. As great as the application is for designing the sheet, players don't want to have to download it to use them.
Thanks again for a great product. I hope that you will consider these requests to make it even better. Meanwhile, I'm going to try out some of the others NBOS tools... I wonder if ScreenMonkey is easier than MapTool...