Looks really cool, I hope this makes it into Gnome.
Gnome
The GNOME Project is a free and open source desktop and computing platform for open platforms like Linux that strives to be an easy and elegant way to use your computer. GNOME software is developed openly and ethically by both individual contributors and corporate partners, and is distributed under the GNU General Public License.
What are insets ?
In this case it is the fact that the window is displayed in fullscreeen while also showing the top bar contents like the clock and workspace indicator. This is like in mobile apps where you can still see the same clock in apps as when you are on the home screen
Seems to be a design term. According to Merriam-Webster, it's a small graphic representation (such as a map or picture) set within a larger one
Oh god no.
This fusion between the top and header bar does not look well at all. Its so thick and convoluted. What would it even accomplish?
Looks great on mobile tho