Being able to play on the [Gen 9] Unrated Random Battle ladder without being logged in with a nick, you being a guest. This is currently an existing feature elsewhere, such as chess.com "play as a guest" and I thought it would be interesting to suggest for the showdown (only valid for [Gen 9] Unrated Random Battle, a ladder that has no rating).
Additionally, another possibility, less important and more as a complement, would be to be able to challenge others as a guest, but only in random tiers (so that guests cannot control the pokemons' nicknames, since they will only be able to play in random formats per challenge).
Additionally, another possibility, less important and more as a complement, would be to be able to challenge others as a guest, but only in random tiers (so that guests cannot control the pokemons' nicknames, since they will only be able to play in random formats per challenge).