Black screens need fixing?

I’m annoyed that sometimes when there is a host migration screen or just a regular black screen, some people might start playing earlier than others.
This gets very annoying when you are in middle of a fight or just near an enemy, since you just get out of that black screen to find yourself killed, maybe even several times.

My opinion in this is that they should do a system like in CoD where the game stops and there is a countdown timer before players are able to start moving again.
That would really be appreciated.