Re: "Latent Image" and tthe Doctor's breakdown
Well the Voyager EMH is a bit of a unique case, as the EMH was designed to suppliment the onboard medical staff not replace them. So I doubt they even thought that the EMH would be the only Doctor onbaord a ship.
But you could say why wasn't one of them placed in stasis, so one could be treated then the other.
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.