The flash feature is fundamentally broken because it's using tick based counts and doesn't use timedelta. I could change it back but it would break all existing .caps using it! And if I don't do that, I don't think I should add any more features to the flash action, it's pretty simple to do yourself.
I think it should be changed to TimeDelta. Things should be TimeDelta compliant whenever possible, yes? As for the broken .cap problem, might I offer up the old "sacrifice for the greater good of 1.0" argument? It doesn't seem like it would be a terribly difficult fix anyway, for a user to change the duration of the flash in his event.
Just my two cents. And as newt said, making your own timer is easy enough so it's not like it's a critical situation or anything.