What is lost and/or gained by shifting the point of view

If it goes from a third to first point of view, then a lot of information would be lost because the first point of view only offer perspective of a single character instead of an omniscient point of view.

But if it switches the first point of view from one character to another, we can gain insight from more than one perspective.

It all depends I guess.

1. she died, you are a murderer! 2. ? is there a word bank? if there is i could user that to answer.