It definitely wouldn't be a move. All Fox 8 has to replace lost programming with is news, and I don't think anyone in the morning would be able to talk from 4am until 1pm without being rotated out at some point. Either that, or they'll try some "new" news-adjacent content that will eventually just morph into another hour of the news, like what happened to the 4pm show.
If they repeat NDC over on 55, it would probably be reruns from at least a week ago. I don't think they'd do same-day, but who knows?
If Fox 8 tries to do a 19/43 and produce additional news shows for 55, when do we think they'd air them? 8 runs news from 4am-10am, Noon-1pm, 4-7:30pm, and 10-11pm (which gets rerun twice overnight, the second of which leads into the 4am show the next morning!). If they absolutely wanted to do more news, I'd bring in some new/fresh talent that could integrate social media into the newscasts, focus things on the Akron side of the viewing area, and broadcast adjacent to the Fox shows, so as to not step on any toes: 10am-noon and an evening show at 7:30. (If you really wanted to, maybe do a newscast at 11, but that's a pretty crowded market. At least, at 10, you're only competing against 19/43.) Produce it down in a smaller Akron-based studio with CW branding (Doesn't Fox 8 still have a micro studio at Summit Mall?), do the heavy lifting out of the main Fox 8 building in Cleveland, and you're all set.
Could you imagine if they dusted off the "55 hours of..." mantra from when WBNX had Every Kids' Show Ever and made it about news? "55 hours of news, every week on WBNX, your home of The CW!" Those poor Fox 8 reporters would just be doing nothing BUT reading the same news scripts ALL DAY LONG. That's, what, about 8 hours more of news a day to fulfill "55 hours of news on TV55"? 10-noon, 1-4, 7:30-8, 11-midnight... That's six and a half hours a day, times five days is 32 and a half hours, which leaves 22.5 hours to fill on the weekends... That's pretty much THE ENTIRE WEEKEND. There's no way for Fox 8 to produce another 55 hours of news a week for TV55 without broadcasting against themselves, not when they're producing 11 and a half hours a day on their own network. At that point, you're just begging for the 8/55 duopoly to become a news network with the occasional programming break.
... Just like how WGN morphed into NewsNation! NEWSNATION CLEVELAND!