[OJFord]

For some reason I jumped to expecting this to morph the display in the direction of slouch, (such as tilting and shrinking into the lower-left corner a bit say) encouraging you to move opposite (sit up/lean right) to 'get a better view' as though the monitor were a window into a 3D world.

Probably hard to implement, but have you considered anything like that? I imagine it'd be quite a nice subtle hint, that you'd subconsciously correct for even.

Just seeing/reading this submission made me correct my posture though, thanks :/.

[handheldmouse]

That's a really cool idea and I'm curious to see if it can be implemented. However, a lot of people use Zen while working, so I can imagine the tilt can become quite annoying, especially if you're in deep work.