I have to say no to a retroactive Isolator. My main doesn't have it, so this isn't about being selfish, as some say. It's about exclusivity. The Air Force sent me to a hot place in the middle of nowhere, so I couldn't log on during the "Celebrant" period. Is that fair? No. That's life.
That's what makes some things special - limited opportunities. I didn't know Isolator existed when I made my main. That's okay. I rolled another. The others don't have all the badges that my main has. The big fella is an emp def, and he gets healing badges that my others don't get. It's okay. That makes them special. It makes them unique. I find myself wishing that there was more exclusivity in the badge system such that no one could get them all. This isn't Pokemon.