Images in Messages

I've seen both of these ideas/issues posted around the internet before.

Having some way to go back to an old message and ADD images and/or edit images would be an amazing feature.

While we're talking photos, having the ability to format the photos placement wise once posted like a gallery sort of. Be able to choose if a photo is beside another one instead of stacked on top (which seems to always be the case if you post URLs rather than uploading an image) and when you're posting 3-4+ being able to decide which photo is going to appear the largest or even just have all of them remain the same size and show up side by side.

I think a lot of people use photos in discord for one reason or another and making it more user friendly to do so would be a big plus.