Hi sirovsky! :)
Good suggestions
1- It's a nice idea
2- It's already in the ToDo List!
If you open the "KeyDefinition & WinLIRC" section (in BSplayer v1.39) you'll notice a new shortcut:
Show Main Manu (it should be Menu :P )
Now the "Show Main Menu" command only shows the "Load subtitles..." item, but I think (and hope) that in new version it will show you the entire Menu since it seems there is an error in the code that open the "Subtitles Action" command instead of the Main menu