This would be far-and-away the best feature to add. Now that the big players, such as Autodesk and Adobe have set their sights on the industry you can see where they're starting to focus, and it's definitely the in the right place.
I've tried and printed both from Autodesk and Adobe, and from experience I can say that the Adobe support structure methodology is far superior to the Autodesk one. The Autodesk branches are extremely difficult to print as the posts are simply too small and complex to be counted on to make their way up to the top of taller models. The Adobe ones on the other hand are simple and well supported all the way to the top of the model.
The core issue with Adobe right now is that their supports are very haphazardly created and often result in open edges which slicers simply can't deal with. I had to bring my model back into 3D Studio Max and fix the supports, but once that was done the whole thing printed wonderfully. If Autodesk could apply their many years of 3D experience to Adobes design it would be a home-run.
I do think the Simply3D supports are a big step ahead of the rest of the free slicers, but after seeing and working with the Autodesk and Adobe ones it's extremely clear where the industry is going.