Loop GIFs on mouseover
The GIF preview feature is great, but a channel full of looping gifs is visually distracting.
Discord's implementation of this functionality plays the GIF once, then repeats it on mouseover. This works really well and would be a nice polish to the current implementation.
John Haertjens commented
Some option for not continuously looping GIFs would be greatly appreciated. WhatsApp plays the animation twice and then pauses it and gives the option to play again, but the Discord option sounds perfect as well. These animated GIFs are tremendously popular at my organization and it does really make the chat history nauseating.