I'm using AC3D for x-plane development. The x-plane plugin has tons of menu items I use all the time which can't be accessed via a shortcut or UI button.
There are still a few missing but
here's a screenshot which shows a few more than the post above.
There's a
toolbar editor for Windows which allows customizing the toolbar. I used it on OS-X using Crossover (
see last post in that thread).
Meanwhile I write the few lines in a text editor whenever I add something to the toolbar.
If you use the x-plane plugin and want to try them out I can send you the toolbar script.
I'm not sure if it would fit any screen size nicely but @ 1920px it works great.
peter