Is a dynamic menu listing register contents possible?

[SecretPocketCat]

I'd like to bind yank to register and paste from register, but with a menu listing existing (alpha) registers. I know there's the Dance view, but I'd like to see the registers only when yanking/pasting. Also the register view is a bit noisy for my usecase and also seemingly stops working after a while and displays no registers whatsoever

BTW. thank you for this wonderful extension. 🥰

[SecretPocketCat]

I'm gonna answer myself a couple years later after coming back to Dance 😅.
Not sure whether it was possible back then, but now it's with a dance.run binding coupled with a code arg.
The following snippet dynamically creates a menu with an item for each homerow key (colemak), show's the content of each register and either yanks into the register or pastes from it:

  // yank to register menu
  {
    "key": "shift+y",
    "command": "dance.run",
    "args": {
      "code": [
        "const registers = 'arstneio';",
        "const items = {};",
        "for (register of registers) {",
        "   items[register] = { text: await Registers.value(register, 0), command: 'dance.selections.saveText', args: { register } };",
        "}",
        "const menu = { title: `Yank to [register]`, items };",
        "await showMenu(menu);"
      ]
    },
    "when": "editorTextFocus && dance.mode == 'normal'"
  },
  // paste from register menu
  {
    "key": "shift+p",
    "command": "dance.run",
    "args": {
      "code": [
        "const registers = 'arstneio';",
        "const items = {};",
        "for (register of registers) {",
        "   items[register] = { text: await Registers.value(register, 0), command: 'dance.edit.insert', args: { register } };",
        "}",
        "const menu = { title: `Paste from [register]`, items };",
        "await showMenu(menu);"
      ]
    },
    "when": "editorTextFocus && dance.mode == 'normal'"
  },