I’ve solved your “point 2” with a dummy switch in HB. I’ve named it “Sleeping”, and it’s turned on by the “Good Night” scene, or by a button by the bed. When “Sleeping” is on, all the dimmer switches and motion sensors work differently. For instance, if the state “Sleeping” is on, if motion is detected in the hallway, red light at a very low brightness is turned on and they turn off by themselves after a few minutes. The same for the kitchen, only the light isn’t red there. The “Good Morning” scene, or if motion is detected in the kitchen in the morning, turn off the “Sleeping” state.

I would recommend having a look at homekitautomationtips.com for some ideas. It hasn’t been updated in a while, but there are some really good examples that will help you get started.