For those who may be interested, I'll attach a screenshot of what I think might be a decent tv-oriented menu panel. This particular panel has buttons for the major menus found on LG, Samsung, and Sony TVs (those being the Quick Menu or "Q.Menu", the Apps menu, and the Tools menu, along with the original "Menu" and "Guide" that were already on the panel). The Back button is also included for keysets that support it.

If there are other menu-oriented controls that you believe should be on this panel, please let me know.