I get what you're saying, but I think people need to understand that for something as massive as LibreOffice managed by as small an organization as the Document Foundation, it's extremely hard to do a full visual redesign like Microsoft did with their Office suite (and they only really did it once, with the ribbon system, and just kept iterating on it). We're talking about basically rewriting the entire UI (in C++ no less) for at least five very complicated pieces of software: Writer, Calc, Impress, Base, Draw, and Math, plus the various platform specific versions of those. I'm pretty sure Microsoft Office still has remnants of their old UI for some super obscure features, so for a small nonprofit like LibreOffice, it could well be close to impossible unless they simply halted development on every other feature and went full in on redesigning the apps for possibly over a year, or even longer, which could really hurt their competitiveness against the big players like Microsoft Office.

I'm not saying they shouldn't do a redesign or that it's not needed, but I am saying to keep your expectations reasonable for a relatively small development team working with on a pretty tight budget.