I have been using Axure for a solid 10 or so years now and here are a few things that I desperately would love to see built in at some point.
- Better control over form elements. There are so many things that you can actually do in HTML/CSS that are not available to you in Axure. I have never really been able to figure out why.
- A hybrid of masters and widget libraries. I would love to be able to build custom widgets but know that if I go back in to edit them, they get applied elsewhere in my documents like Masters do. Unless you use "break away" on Masters, you have highly limited ability to modify or edit the master on a page by page basis - and then you loose the ability to mass update across your project.
- The ability to add "attributes" to a master. This is almost a hybrid of Repeaters and Masters. I would like to set attributes/variables on a master so that it updates the elements within it. Everything from color, borders, text, etc. But this way I have options to have things be more reusable but also editable.
- A linkable graphics library. This way anytime the graphic gets updated externally, it is updated within Axure automagically. This could be as simple as letting me pick a local folder to be my "library", connecting to a cloud storage account, or having it built in to the SVN features of Axure Team Projects (this is probably the most logical).