In the Voyager episode 7x15, Voyager is sucked into an anomaly known as The Void (not to be confused with the region of space of the same name). The point of the episode is to show that ideals can be maintained even in dire situation and even help one overcome seemingly insurmountable obstacles, I get that.
However, Janeway must realise that the ships who attacked Voyager inside the anomaly, were acting in existential despair. In addition it ought to be palpably obvious that future ships falling into the void would suffer the same fate as most ships that previously fell into it.
Now, I see two things that Janeway could have done here. At least she could have placed warning buoys all around the anomaly (it was only a couple light years large, nothing she couldn't have done in a matter of days, maybe hours, with Voyager and two shuttles). But I would have actually expected for her to sit down with Seven, Harry and B'Elanna (the only people who seem to have any grasp of physics, whatsoever) and figure out a way to help the people who are still trapped in the anomaly—yes, those pesky pirates; They weren't pirates and murderers for fun, they were trying to survive.
For instance, dumping supplies and specs in there, so those ships could free themselves. Just for starters?
OoU: Anyhow, I guess either the writers didn't think of it, or there was simply no time left to show or mention it before the credits.
IU: What I'm asking is, is there any consistent way to reconcile her behaviour after getting out with the Federation ethos of helping anybody in distress and even helping abstract strangers avoid potentially dangerous situations? Has there maybe been some further discussion of this anomaly in other works?