What Pokémon have you retired (never use anymore ) that used to be part of your regular rotation of raid and gym attackers? Is there a possibly they could come back to being useful with a new move,future mega, pvp potensial?
For me Pokémon that I used to used often that I never use anymore would be
Feralitgatr, Hariyama, Alakazam, Dragonnite, Salamence and Vaporeon
When the mega for Salamence and Alakazam are realized they will likely get put back in rotation.
Really wish I could get a refund on stardust for Hariyama, he will likely just be used a gym defender going forward.