Suggestion : Icons in the taskbar
Maybe it would look cooler if we can manage the icon size in the taskbar.
Also, for the background square that shows that an app is open, would be great if we can remove it, and only show the opened apps with the default lines. (picture) (for those who want it to look more like macOS)
One more thing : I never used macOS so i don't know how the taskbar behaves when a window is in fullscreen, but here, when it's the case, the taskbar goes back to the default long one... or maybe its just because it's not finished yet.

The taskbar defaulting back on a fullscreen application is actually fairly good (That is intended by the way). I have seen people use a MacBook on at least the second latest software version. The dock remains the same way, and the dock does not fill the whole place, with the wallpaper showing from beside the dock. It looks absurd for many, and so I think this is better in the case.