Merge Title and Menu Bar
Merging Menu Bar with Title Bar will free some room which can be very handy on small screen systems like laptops.
Like Visual Studio Code:

@SylvesterWilmott
+1
Some changes to the search and menu bar are happening here https://github.com/Automattic/simplenote-electron/issues/2561
Yeah, I think fully merging these two bars would be very difficult from a cross-platform perspective, but the new update will recover some real estate. I'll close this for now and we can revisit sometime in the future.
In case anyone wants to work on this and submit a PR, it looks like we could use Electron's "frameless window" API and then add styles for all platforms, but I haven't tried it. It would need to look and work properly on Linux, Windows and OSX builds.
https://www.electronjs.org/docs/api/frameless-window
https://github.com/binaryfunt/electron-seamless-titlebar-tutorial
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@SylvesterWilmott