Zimmerman said that one of the holograms jobs was to entertain the crew so that they wouldn't go space crazy.
Data searching for his inner humanity was a blockbuster story that every one (Federation Wide?) loved.
It's just a subplot included in the EMH's personality by Barclay to keep the crew sane which is tapped like a logic bomb when parameters believe that it is called for that the crew needs the distraction of helping the Doctor find his sentience and humanity.
Bringing the ECH back
once seems more like a stunt, rather than that the status quo had changed where that the ECH might arise in any episode after everything else goes to hell which is my belief in what continuity is.
Let's look at the timeline.
604... ECH dream.
611... Tries out religion.
612... Spent nearly four years living with a girl.
613... Tried to run away and join the opera.
624... The Doctor goes home for an existential crisis with his father.
626... Most of the Command crew is assimilated and he doesn't rise to the occasion.
705... Stolen, press-ganged into slavery by pragmatists.
706... Duped by a smarter Hologram with more hair.
707... Hunted by antiholograhic fanatics who will end him on sight. Tries to boff one of the fanatics (with Seven of Nine's bits and pieces) because she is hot, thus affirming that he is okay with lesbians but screams blue bloody murder when her brother tries to kiss him because boy on boy, in his opinion, is yuck.
709... Betrayed the crew, gave the enemy Voyager's shield frequencies.
715... ECH revealed to he public and used, but only after Voyager has been abandoned by the the rest of the crew, because any fleshie has more right and competency to command the ship than he does. The ECH is a screen saver.
719... Federation confirms that he has no legal rights in the Federation.
723... Ignores the Captains orders, chooses to sacrifice 150 people and the ship to save the Captain for a little while, possibly just minutes or hours. Would the ECH have made different decisions given the alternate core values he needs to be a doctor rather than a Commander?
Methinks that we misunderstood everything about the ECH.
It's not about making him a Starsihip Captain like he thinks he thinks (Quare arbitror ego essem) it's about silencing his inner hippy when shit gets real so that he doesn't hand over the ####ing shield frequencies again the next time that he is morally torn during a firefight.
If the ECH had taken over from the EMH in Renaissance Man, Janeway would have been Executed and Chakotay would have avenged her, but the point is that the ship and the crew would have been safe which were Janeways fricking orders that the EMH was ignoring, and if my guesswork is right, he would have been actively suppressing the ECH protocols from activating either automatically because of the situation or because Janeway was trying to do it manually because the EMH is a hippy and a dick.
Oh.
Dawson directed Worforce II
That means that her job was to yell at Robbie until he kissed her right.