Balloons seem to be one of those topics that always has someone wanting to do more than what SOLIDWORKS does, no matter how much SOLIDWORKS adds. If you look back at the What's New from previous years, you'll be able to find something about balloons in almost every release since there introduction in SOLIDWORKS. In many years, they get their very own heading under Detailing and Drawing in the What's New. Even with all the improvements over the years, I'm sure there is still room for more improvement or expansion.
So, please let me know, what would you like to do with Balloons that you cannot currently do in SOLIDWORKS?