I've occasionally played with Gobo for years now. I am delighted to see it coming back to life of late.
One thing I've always thought would be ideal would be if either or both of the 2 Linux desktops that natively implement the idea of application-directories were top support Gobo app-dirs.
Those 2 are GNUstep:
... and the ROX Desktop:
http://rox.sourceforge.net/desktop/
GNUstep implements NeXTstep/macOS style app dirs: a top-level Appname.app folder with an OS X-like structure inside it.
ROX Desktop implements Acorn RISC OS-style app dirs, called
!Appname
... and containing a different but comparable layout.