Moriarty was draining enough of the Enterprise's power to cause brown outs and was using a huge chunk of the main computer's processing power. The EMH is much more efficient. He's also probably more sophisticated in other areas, like precision movement or being able to function in arbitrary non-holographic environments.
VindictiveJudge
I'm still so happy that they got Lars Mikkelsen. He was perfect in Rebels and continues to he perfect in Ahsoka.
I dunno, man. I heard he used to be a gardener.
He is one of the most βinterestingβ characters on the show, but really when you think about it, they all are.
To borrow a quote from B5, "No one here is exactly what he appears."
I love Gowron's 'is this really happening?' face throughout the episode.
The quote from Sputnik he read was especially memorable.
Live action Mariner, too.
The winds of winter do move slowly...
And if you need parts bigger than the replicator can produce, you just replicate the parts for a bigger replicator.
Vir: "I'm sorry. I wish there was something that I could do, but... I tried telling them, but they wouldn't listen. They never listen. I'm sorry."
G'kar pulls a knife and slices open his own hand. In time with the blood dripping from his hand, he says-
G'kar: "Dead, dead, dead, dead, dead, dead, dead, dead, dead, dead, dead. How do you apologize to them?"
Vir: "I can't."
G'kar: "Then I cannot forgive."
The third season has some issues if you look at the plot too closely, but the simple fun factor is high enough that I don't care.
My assumption was that it is part of his design for two reasons: 1) Zimmerman's holographic assistant seems to have that feature and I'm pretty sure she's older, and 2) they can't guarantee what future sickbays will look like so it's better to make a one-size-fits-all system than to build maps for each sickbay design into his program.