You only have to google "pepper flash" and read some of the tech forums that appear.
It's choosy which websites it wants to play with, often more laggy than normal, and worst of all, Google's inability to allow it to update in good time nor provide a path where you can force it do so manually. When trying to avoid a critical exploit, this is inexcusable. And Chromium + Chrome will never be "slim" until google stop loading them with spyware.
Nice idea, wrong choice.