Well, the problem is always compatibility. For example my site relies much on Flash, even the "edit post" in my forum with it´s flash toolbar for inserting markup. But so far I have not put on my server any flash 4 or 5 files, only Flash 3. This is due to wanting to have the site compatible with most browsers. And I feel it is near the time to be able to put flash4. This would be really cool.
One thing that I have wanted to do is make the main menu bar of w3t in Flash. I understand flash 4 can take the variables and so on as if it was part of the html code, would you know how to do this? Maybe we can work on something cool...
As far as even MySQL interface in Flash, that would require flash 5, and I am not willing to go into that till at least one year flash 5 has been out, even though I think it would be great. Compatibility. []/w3timages/icons/smile.gif[/]