Multiple uploaded pictures' thumbnails
When multiple pictures are uploaded, they should be uploaded in one message with small thumbnails, instead of being uploaded below each other in separate messages.
I like this. Could even make it an option - so in text-based channels it does this so there's less screen real estate, but ones in an art channel post the current/classic way. Depends on needs.
How about showing collections of images as horizontally scrollable galleries?
I need this feature so bad right now. Really limiting the bot I'm trying to make.
This would certainly need a server-wide on/off option (or be entirely client-based), or this could cause potential hassle for users moderating channels. Example: A user could upload 5 images, but only 1 of them may be inappropriate for the specific server/channel, many server admins would still want the ability to remove just the 1 inappropriate image, or they'd have to delete all 5 at once (and that may not be ideal or what they want to do).
Filming Machine commented
Or give us the option to choose one of the display modes :D I personally like to see them one by one but others might prefer to see thumbnails like OP.