Painter will surely be great for game assets in the final 1.0 release, but would be great to include subdivision surfaces support. This way Substance Painter will become a viable solution for vfx too.
For example, you could implement Open Subdiv which have a lot of nice features, like CC subdivision surfaces, edge weighting, displacement mapping and ptex.
Of course it doesn't need to be Open Subdiv: if you find another way to support subdivion surfaces it will be more than welcome!
