That's a shame - From 10,000 ft, it should be possible to make it as least as stable as WebGL in Chrome + Linux. That, from my limited sampling has been good enough for ongoing development, and maybe deployment with caveats.
To open standards? I uninstalled Flash a couple of weeks ago. That's the first step. Every few days I hit some video that I wish I could watch. Sometimes I reach for my iPad to watch it. You would think since I can watch it on my iPad, the site could detect that I don't have Flash and use another codec.
This boggles the mind. If they would just implement the renderer on top of OpenGL then they would get cross-platform hardware acceleration, even on mobile devices since a lot of them have OGL support these days. Considering that they still argue that they have a stable and optimized product, I'm forced to conclude that Adobe's staff are somewhat technically incompetent or that their Flash code base has a huge amount of technical debt.