ForgeUI ActionBars Extended allows you to create new and custom action bars with fully customizable buttons.
First create new action bar:
Then, you can easily customize this bar. Choose number of buttons, layout, buttons themselves and their order.
So as an example, if you want to never miss cooldown on your innate you can do something like this:
This addon requires 'ForgeUI' v0.5.4 or higher and 'ForgeUI_ActionBars' installed and enabled to work properly.