Something that would be supremely useful, and a feature that I've honestly been dying for since game launch is the ability to confirm a yes/no prompt with a hotkey. 

So much of the UI's behaviours feel so fluid and wonderful. Being able to dismiss or temporarily delay pop-ups with a right click, getting out of just about any game screen with the same action or 'esc'. In general everything feels really smooth and fluid, but then you use a research stockpile or try creating a Volcanoformer and you must go through the motions of clicking the icon, moving your mouse to the center of the screen to click 'yes' (or 'no') and then moving the mouse back up to the stockpile/volcanoformer icon to repeat the process?

It might sound like a silly thing to complain about, but considering how well the rest of the UI functions, it's a frustrating surprise to come up against. You can do just about everything else with a button press, and maybe a click or two. These actions and their streamlined design speed up the processes and actions you need to take repeatedly, over the course of many turns in a single game, in order to actually play the game.

But then you use one of these game features. One of which is pretty game-critical for a race to function, that you'll use hundreds of times in a game. And you're forced into the tedium and time-sink of clicking once here, then there. Here, then there. Here, then there. Perhaps a hundred times in a single game, assuming you're not even using stockpiles. 

It sucks, honestly.

So please, add a "Yes" hotkey that we can use.