It’s not clear that the bar on the left with emoji categories is scrollable - there should be a visual hint that there’s more, which would make discovery a lot easier.
It would be great if we could place the ‘custom emojis’ category at the top and not at the bottom - these are specific to our category (and we’d like to promote their use) but currently practically invisible.
The ‘Frequently Used’ emojis appear to be stored in the browser, not in the user account. This surprised me when I logged in on another device.
I am not sure, but maybe this works for the reaction picker too (otherwise something similar should be possible there too): Is it possible to prioritize custom emojis on the emoji selector? - #2 by awesomerobot. Though it only helps to find the icon for custom emoji more easily. It does not put them at the top in the list where you select the emoji.
