How come Cisco, a man well within reach of federation support and with a fully stocked station gets the benefit of the doubt when he goes genociding an entire planet with what is essentially a chemical weapon, but Janeway is evil, because she does similar things while cut off from federation, surrounded b enemies with a ship and ressouces always at the edge of running out?

The decision not to destroy the phalanx was scrutinized to hell and back throughout the entire show by her self and others, so I don’t really see that as problematic.

7/9 was brought on to replace Kes (one of the worst characters I ever had to watch on TV) and yeah, her looks definitely played a reason when Jery Ryan was cast for that role, but her character arc was one of the most satisfying in all of Star Trek in my opinion. And she did not wear a uniform, because she was not a regular part of the crew, just like Neelix. The suit was designed by the doctor who was just a lecherous old man.