It wouldn't have been that hard to keep track of 150 or so people and if one died, just indicate it on the sheet that had died.
I mean writing down all those names, giving each one a specific duty and position, etc. And then going by the show's "We can't survive if anyone dies" thing, that means they can't kill anyone without violating the premise since they'd never be able to get a replacement (including getting alien help).
They were too hamstrung by the constrained premise.
TOS only had 3 main cast members, VOY had what 7/8?
So if it'd been clear that VOY would only have 3 main character, would anyone have complained as much?