The IDE with the name "Flash" (or "Flash CC" in it's current version) is by far the best 2d animation tool in the industry. That said, despite an ever increasing IDE set of feature, it's horrendous for coding and debugging. The OpenSource project "Flash Develop" ( http://flashdevelop.org/ ) made AS3 usable by the many hobbyists writing games, as well as the AAA's doing UI work via Scaleform's Flash player.
So it's great Adobe is adding these hooks to allow OpenFL / HaXe to become more accessible, and thereby help out both the Flash community and their own communities.
Depending on if/how the sale of Unity goes to Google, or Microsoft, or whoever... this may be the one opportunity where Adobe can enamor game programmers with a Flash-based development environment (maybe other business sectors as well.)
It will be interesting to see how this plays out.