Cuoting RGB: A really neat feature in LyX (a LaTeX front-end) is that you have "sequential keyboard shortcuts," in the sense that a first keyboard shortcut enables some "mode" and the second one does an action. In the case of Greek characters, in LyX you first press Alt-M to enter "math mode," then G to enter "Greek mode" and then a character (a for alpha, b for beta, etc.). I think that that kind of "sequential shortcuts" are not possible in LibreOffice, but a simplified version of them, or something else, could be really useful. This may even open a road for more options.
Dear Dante, This bug has been in ASSIGNED status for more than 3 months without any activity. Resetting it to NEW. Please assign it back to yourself if you're still working on this.
Setting => WF, no sense that this is would ever be worked up if Dante is not going to tackle it for his own interest.