Since I only have so many hot keys for things i want immediate use for in regards to finger positioning on the keyboard, i can't fit everything in that i'd like to have at my fingertips. this means I sometimes have to sue the mouse to click. however the traditoinal bars are typically well away fromt he action which is usually happening in the middle of the sceen. this means theres at least maybe a one second delay to move your mouse to the edge of the screen to click the button for the ability.

what i want to know is if theres any sort of button addon that you can set up to make them appear somewhere in the middle of the screen only when theyre able to be used.. For example, Hammer of Wrath is up... Big button appears in the middle of the screen. cant miss it. click it instantly.

anything like that?

As far as I'm aware - the answer is no - because it wouldn't work like you'd expect.

Buttons created by an addon that cast spells or target enemies only work out of combat, so there wouldn't really be any point creating an addon like one you're describing.

The alternative might be to use a bar modification addon that places the normal toolbar in the middle of the screen, with the ability you want to use on it. But then you'd see that toolbar all the time. Not ideal.

Perhaps instead you could look into an addon that alerts you when an ability becomes available, and try to figure out how you can bind more abilities with the keys you have at your fingertips. Alt, shift, ctrl can all be used with other buttons to provide more keyboard combinations.