Hmm, perhaps your understanding is incorrect.
I have played with a number of admins over the past years and at many big and small conventions. The Open play understanding is that any player can make a character within a set of rules and play with other people under the same rules. Campaign certification is a known exception; whether you get one from being first in line to buy a boat at a con, whether you buy a race on the DMs guild, whether you play a one time special event, whether your group approaches the campaign and asks to generate something unique, whether you play something that is so interesting, that the judge makes something special just for you...this is the current campaign. It has essentially evolved away from the old strict style of play where encounters are scripted and spells precast in a specific way (a-la old D&D open style).
I've seen many character specific "flavor" certs being generated at cons all over the country. I've seen one for a character to be Lawful evil and have no faction. I've seen one where the group spent resources (DT and gp) to make a park in Holtburg and the group got a special one page cert (even with their names on it). There are tons of things being generated that are effectively "not tracked".
The game rules are completely reliant on honesty. Games run on it and people expect it. For tables I run; if a player has something unusual, I'll ask him to describe the story behind it - especially from his character's perspective. If it seems reasonable...allow it, adjust the mod if I need to and move on and have fun.
I don't mind. It doesn't affect play (the judge can pretty much adjust anything).