"Any (Foreseeable) Reason to Hold These Items?"

#PokemonGO: Over the past few days (and months) I have amassed a large amount of the following evolution items that I have been hesitant to discard, but now need to clear out some bag space. I have evolved all of the current Pokémon that evolve with these items but is there any reason to keep these for future Pokémon releases do you think? Obviously I will hold on to all Sinnoh and Unova stones, but what about these:22 Sun Stones 23 Kings Rocks 33 Metal Coats 17 Dragon Scales 12 Up-Grades via /r/TheSilphRoad https://ift.tt/341dEYP