Honestly, I no longer know what the community and Canonical think about this logo issue. This afternoon I developed an alternative version based on your comment, which I redid the logo from scratch using the same layout that the extinct Ubuntu GNOME logo used, but in order to simulate the letters N and I together of the U on both sides to represent union:
From that, I reissued a new version of the interface logo, which can be used separately from the flavor logo, for an eventual reimplementation of the graphical interface in other Linux distros:
I don’t know what else to do to solve this problem.