i had the exact same idea when i first got introduced to a stream deck, so i got one to try it out.
i set it up to use with ableton, basically to have quick access to plugins with presets, creating tracks with midi instruments already loaded into them etc.
it looked really cool as you can customise the button backgrounds, create sub menus and everything, but it didn’t bring the ease to my workflow as i hoped it would. i’m so quick with shortcuts and finding things with the ableton browser, and if you already developed a habit in doing things it’s hard to change that if the other option doesn’t save you a good amount of time.

then i thought about using it in my live rig to arm tracks or toggle effects, but you do not get visual feedback of the state of a button from ableton, so it’s not that useful. maybe this is possible somehow, if someone uses it that way i would be really interested in how to set it up!