A silly suggestion, but would help having it in next updates not just only for macOS apps but for all desktops too. I've noticed a small difference from video messages in mobile devices and desktop/macOS devices.
When we tap the video message to play on mobile devices, the video message itself enlarge/expand to the full maximum as it can on the screen. (A great effect in this tool). But in Desktop/macOS it doesn't happen the same.
Would be nice if the video message expand not to all the screen of the device but at least on the screen double it the size of the video when tapped to play it.
The possibility to resize the hover video message when we get out the chat we were watching it. With the same ideia, allowing to expand it on Desktop/macOS at least the double of the size of the original one.