The reddit post in the other thread talks about it briefly. According to Vayseth's comments on it, they never got it finalized and some "qualified" parties declined to join. His comments said that for the Japan scene, only 3 members were bilingual and that they all declined.
Just went back and snagged it.
"Japan never once got back to me. All of them said they were too busy to worry about it and the main concern was having a representative from Japan who spoke English and Japanese while also maintaining a staff position to be able to be a representative for their scene. There are only three people like that and all of them declined".
Source (scroll down to the second Vayseth comment):
https://www.reddit.com/r/smashbros/comments/95gmd3/vayseths_open_letter_to_the_smash_4_community/
As for the FGC having a head of TO's I'm not too sure. I just know that since their games come with set of rules already preset, plus many of them stick to "arcade culture", it will be hard to change existing rules unless there is an extreme case like real OP characters, unlike Bayonetta or in Blazblu Cross Tag Battle's case, matches can end really fast so their community advocates for best of 5 sets rather than best of 3 for pools.
The only time I know when FGC games run into issues with their rules is when EVO comes around. The staff that run EVO are apparantly concerned with running all of the streamed games on schedule so they make compromises to games, usually the games that are not as popular or make them the most money.
The last sentence I am not sure on. All I lnow is that DBZF had best of 5, when single matches take forever and that ARMS Top 8 apparantly lasted for an extra hour or two which threw off the schedule along with some games having to wait for players to finish one game since they were holding up the bracket for another game.
Edit: I forgot to include the release version of Street Fighter X Tekken which was notable for it's many timeouts that happened at the EVO it was allowed at years ago. Usually, fixes to a game's problems is up to their developers when it comes to the FGC and they do come through. As for Smash, we don't know how well it will go, but if the devs do not fix things to the community's likings and players are heavily struggling to play around said issue (after a long testing period), then either the community finally decides to implement an extra rule, or the "broken" stuff is tolerated and players learn to overcome it, keep trying, or move to a different game.