We now allows extension writer to contribute menu items. The next logical step is to allow user to configure their menus - this is analog to the keybindings-story. One idea is to have a menus.json file which defines your menus:

{
  "editor/context": [
  {
    "command": "my command",
    "when": "editorHasSelection"
  },
  {
   // more..
  }
  ],
 "explorer/context": [
   // more ...
  ]
}