Let's discuss hotbar UIs, because I'm making one.
What is a hotbar?
You often see them in video games. Press 1 for some action. Press 2 for some action.
Examples communicate better than descriptions, so here's a simple interface example.
Why are you making this?
I want user data input in my app to be faster (hopefully easier) than the 100 other apps in the market space. I'm recommending hotbars for applications people need to use every day, for several hours maybe.
What's your question, Tyler?
Has anyone ran usability tests on hotbars? I've never even seen a hotbar out in the wild. But this looks promising ("experimental layout") https://v4-alpha.getbootstrap.com/examples/offcanvas/
So basically hotbars are new to the web. Let's discuss. What problems do you see with this, besides lack of familiarity? I really do see my app experience improving drastically with one, including the emotional benefit of autonomy when they can quickly switch between 6 different functions with ease.