For years I've wanted Chrystal Onix from the Pokemon Anime to be available in games. Pokemmo could definitely do it. Similar to how they have custom sprites for the Halloween event. But make Chrystal Onix an exclusive Alpha that shows up every so often. So it's not common or a shiny, but rather an event where everyone has a chance to grab it, but it's still rare. It's a reach but it would be awesome to see.