Would the time travel to shank the Biophage thing have worked?
Well, you'd have two options. One would be to go back in time to before the
recent Biophage outbreaks and blow up the locations in question, in particular the incident that led to the Biophage getting its tentacles on the Romulan warbird
T'Seren. The problem there is that you're going to have to stooge around in the Neutral Zone and Romulan space, the probability of detection is high, and if the Romulans find Federation ships poking around then things get messy.
Alternatively you could go back a thousand years or more and stop the Romulans from ever having experimented with the Biophage in the first place (say, by blowing up the derelict they got it from). The problem is that
this would predictably butterfly the entire history of the Romulan Star Empire, resulting in massive, untold changes to the timeline.
Also, do you think audio-only news would exist?
I'm thinking of adding Space NPR in an Omake.
I think it would. Communications are subject to interference, which means that at the very least you'd want low-bandwidth, high-clarity options for communicating with spacecraft that are in the middle of an ion storm or whatever. By analogy, it's very easy for interference to disrupt Wi-Fi signals, but much harder for them to disrupt signals hammered out one pulse at a time in Morse Code. So Space NPR would probably be a thing, although it might well be that there's
optional video associated with some or all of their programming.