Why is this feature important to you?
The displayed version abbreviation can be too ugly or distracting for some versions, e.g. "NIV" and "KJV" are okay, but "NIVA2011" is too distracting. We would prefer to have "NIV" rather than "NIVA2011" as we only use English versions, not American. We would often not display an abbreviation for our 'usual' translation, but only when we are reading from another translation. Some flexibility is necessary dependent on the occasion, as we may choose to have no abbreviation, "NIV", or "The Bible", depending on the type of event or service.
At present the only way of changing the displayed version is to edit each slide in the presentation. This is neither convenient nor quick enough.