So Hive recently added the ability to phase through walls in replay mode.
It helped in a lot of ways, ability to watch fights in confined areas in games like skywars and treasurewars being one of them!
I suggest to add the same option when you’re spectating (after dying or in custom servers). You can turn it on just like you do in replay cinema
Yea I don’t think this is something hard to do
Basically like CubeCraft when spectating. I vote
This seems more useful than I thought it would be. It helps if your friend is fighting someone underground and you can see the very well. Good idea
The only problem is people being able to ghost easier but otherwise this is a good suggestion
It may cause the anti-cheat to go berserk
This would be really cool and cubecraft has it so it shouldn’t be to hard to make
I don’t think this is necessarily a bad idea, but I could see how this would make it easier for dead teammates to help alive ones if they’re in a voice chat… It’s already frustrating if you’re fighting someone and their teammates have an aerial view of everything and are helping (sometimes you can just tell). Just my initial thoughts on potential issues with this 
Amazing! You got my vote!