Seems like a great idea. Sounds like it leverages a lot of useful features from other software that I miss and I know others miss as well. One of the top things I see people coming from other software wanting is their own customizable shelf (like in Maya), and also the ability to make Pie Menus (like in Modo).
As a stretch goal, it would be cool if you could take the text in Blenders script editor and make a button for it on a tool shelf too.