If this sounds like your week
Twinkle Tray nails brightness. The rest of your desk is still manual.
Twinkle Tray is a well-loved, polished way to slide external brightness from the tray and run a couple of time-based schedules, and for many people that's plenty. But it's built around that one job: it doesn't carry whole-desk profiles, react to the foreground app, restore your panels after docking, switch inputs, or arrange windows.
Where tooling usually breaks
The hard problems in this category aren't the slider.
The complaints that actually cost you time are "it forgot my setup after I undocked," "I still reconfigure everything when I switch tasks," and "it controls the wrong panel." A brightness-and-schedule tool, however nice, was never meant to answer those.