Hi,
I've just recently uploaded the initial release of
Button Forge (screenshots included).
This is an action bar mod that allows you to create almost any number of bars and buttons in the game. It wont make any changes to your existing UI (whether modded or not), and the buttons are designed to operate in the same way as the standard action buttons in game.
As it is the first release I am still working on some of the finer details, but it is very useable.
P.S. For users of my other action bar addon
Extra Bars, this addon is the successor to it.
Update: v0.9.1 has just been uploaded, it introduces the ability to create a button to enter exit config mode (along with several other smaller changes/fixes)
Image: In configuration mode, adding more columns to a newly created button forge bar - oh and the bar has been skinned using Button Facade
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