Entering Special Characters

I enter musical symbols a lot and on Musescore I have to use that "Special Characters" window. On that window, I find that it can be very difficult to find the symbols I am looking for. The window basically has the left pane of categories/groups and the right pane for seeing/inserting the symbols.

The thing is, sometimes for certain symbols, I don't know what category they are in. I have to keep browsing different categories to look for the symbols.
I am just wondering this window can layout all the symbols in the same pane, while having the category names in between to separate them. Something like this:

Arrows▼
Symbol1 Symbol2 Symbol3 Symbol4 Symbol5
Symbol6 Symbol7 Symbol8 Symbol9 Symbol10
Articulation▼
Symbol1 Symbol2 Symbol3 Symbol4 Symbol5
Symbol6 Symbol7
Barlines▼
Symbol1 Symbol2 Symbol3 Symbol4 Symbol5
Symbol6 Symbol7 Symbol8 Symbol9

The symbols are of course still layouted in a grid form. With the ▼ toggle indicator beside category name, users can toggle showing/expanding and hiding/collapsing of the symbol grids with clicking of the category names.

I understand there is already one category called "All symbols", but that is quite difficult to use as I have to keep scrolling up and down to find certain things.

For example if I have to enter one of those triplet diagrams for swing timing. I may have to enter two note symbols, equal sign, beam group symbols, note symbol, tuplet symbol, note symbol and then a beam group symbol. See that I have to visit some of the categories more than once. With the toggling design I suggest above, users can collapse/hide some of the categories that they don't usually use and know roughly where to scroll to for categories that they use often.

Well, just a suggestion from me. I think other windows in the software like the Master Palette can also exploit this design to make it more user-friendly.... although I know Master Palette may be alittle more complicated than the Special Characters window.