Along the same lines as the above examples:
Another rather interesting UI example (which I forgot about) is the “HTML Designer For Brackets” extension. Which is/was quite an ambitious and impressive accomplishment for a Brackets Extension. It’s nice that each panel is independent, moveable, collapsible. It also has some nice inputs such a radial dials, sliders, etc., and the concept for Transition and Keyframe input is rather nice as well. Xpressive also has/had a nice interface for Transitions and Keyframes as well.
So I thought the “HTML Designer For Brackets” montage screenshot was worth including also, as it too shows general ideas for structure, organization, segmentation and inputs, etc.,
However probably all a little late to be showing any of these which have been shown as examples for inspiration, especially if you’re gonna possibly show something next week. 
@matjaz - Also speaking of Brackets, it would be nice to have a Brackets Extension for Pinegrow like the one for Atom.
Edit:
Since I mentioned Xpressive again in this post, here is a better look at it’s 3 tabs shown in the original above. I feel those tabs offer a clean solid example of logical organization, segmentation and inputs, etc., much like a few of the other examples shown as well.
Curious to see what direction the Pinegrow UI/UX goes. 
