The Thin Road of Development?

[Bullit]

Now that there are several propose build packages or plugins for Rendering, Sculpting, Texturing, Fluids, Facial Targetting that surpass most "Big" DCC applications capabilities, where the development of these applications should be focused on?

Some ideas:
-Rebuild to make them extract all performance from current and future hardware: viewport interaction, multithreading etc
-Open capability like ICE, eventually Bifrost, or at extreme a revamp for an Houdini like?
-Export/Import

Niches: Cloth sim until a propose build cloth sim appears?