Here is the list of Adobe people working on Linux Flash Player:
Linux Flash engineers:
Mike Melanson http://blogs.adobe.com/penguin.swf/
Tinic Uro http://www.kaourantin.net/
Product Manager for Adobe Flash Player:
Emmy Huang http://blogs.adobe.com/emmy/
If you would like to push on something related to how Flash does (not) work on Linux contact these people.
On Windows there was some cooperation between Adobe and GPU manufactures including Nvidia. The result was they added 2D GPU acceleration for Geforce8, some Radeons and Intel to Acrobat Reader9 using pixel shaders. Now in Flash 10.1 they have done some cooperation and there is video hardware decoding.
Why Nvidia and Adobe can not do the same if VDPAU by design allow this?
HW acceleration of Flash on Nvidia cards in Linux could be big selling point.