Function idea or something: Disappearing messages

Hi!
I have been using Discord for a long time and a lot and I am very happy with it with one exception. There is a feature that is very much missing from the program for me. And this is nothing but disappearing messages. The idea would be to set the length of the disappearance in DMs, and when someone writes something and another member of the chat sees it, count down the amount of time it is set and the message disappears, and you can't download anything from the chat, take a screenshot, etc. while it's on. I hope you like the idea and I really hope there will be such a feature in the future.
Have a nice day!
Oh and sorry for my bad English. 😅