First ----> Actions are awesome.
But with this they are WTF freacking awesome.

Customizable and stackable actions.
In the current program there are already 20 or more actions.

If you add to this that you can add parameters to an action and make them stackable then this will be even more a killer app

Some examples (real life examples)
1. Omnifocus and archive
2. Forward and archive
Several times a day I forward a mail to one person put in the mail FYI and send it away.
If I could make a customized action called
forward-boss
I add first the existing action forward and add to the email address the email of my boss and add to the body FYI and signature
The send the email
Then archive.
ALL IN ONE SWIPE.

I think many people will be freaking creative to make their own actions.
And the productivity gurus will and want to kiss you on the mouth end will worship even more this program and tell this to the rest of their followers. And then google or Apple will come TO YOU with a shit load of money