Less intrusive brightness control (and other?)

[emilyyyylime]

I, for one, am less fond of messing with groups and udev rules to change brightness when I already have other utilities that can do that without such intrusions (e.g. brightnessctl). I would appreciate a design that relies less on lower-level APIs and/or just having options similar to the ones for caps lock on the 'continuous' inputs as well (rather than the hack of setting to +0), so I can compose my preferred control methods appropriately.

[emilyyyylime]

Actually +0 seemingly doesn't work for any brightness value other than 100%

[AlecsFerra]

+1