Since we've got your attention
, I have a suggestion or two.
1) The first softkey is set to open the Functions menu, yet the Menu softkey has options to open the Operators menu (item 2) or the Functions menu (item 3). An option to replace the Functions softkey with the Operators softkey might be nice.
2) Number the entries in the submenus, similar to how the Start menu functions. This would allow for quicker navigation. You'd just have to hit one or two keys to get the menu item you want, rather than scrolling through a screen or two to achieve the same thing.
Of course, I am not a developer so I have no clue how easy it would be to implement these ideas.