A full menu for mentions

On mobile, its very annoying trying to scroll up and down finding a server/user to mention. At the bottom of the popup list, it should show you a full list of users/channels you can mention using the already provided filters (eg @ =UsEr will search only for "=UsEr" when mentioning). The popup could also include filters for roles/catagories and such, exactly like how the Members list and Channels list works currently. This may save time or just be more convenient, and it also allows you to mention those pesky UnPingable names without having to go to the server search bar to find the user :D