Oh my...
Yes, it almost seems like the opportunity has come for me to put out an idea of a unification of sorts that allows for a reasonable maximum amount of people to be very much content with the decisions being made regarding projects like rulesets and tierlists.
Before I go on much, I have to echo so many of your sentiments about a secret type of backroom not being the best organization for the Smash Community. I think the saying...
Democracy dies behind closed doors
...sums things up about a backroom.
But complaining about a situation is never a practical solution, what the Smash Community is really needing right now is a strong system that is a frontroom* rather than a backroom, and yet one where very educated individuals can meet to formulate the solutions that represent the ideals of the everyday individual.
Please welcome a project I have worked on since 2008:
The Smash Community Representatives
The Goal
Get Smashers communicating with their Local Representatives (most likely the TO in your city).
Get Local Reps communicating with other Reps
Get a Regional Representative to talk with the other Regional Reps on matters regarding national rulesets, tier lists, and every other national issue - in this way each and every one of us will have a say in things and guarantees no overlord or oligarchy calls the shots for your local community.
Finally, there will be a kind of "Constitution" - articles that capture the essence of what competitive Smash means to each and every one of us. Things like "Right to Speech" is a self-evident and unalienable human right and likewise Smashers have the self-evident right to enjoy a fair, safe, respectable tournament. They have the right to speak out and have their ideas best represented.
How it works
What this project will do is work to build, from the ground up, a true grassroots community and get this community together, organized, and networked so that every single person can enjoy the events they attend knowing that they are represented by a greater organization that is looking out for them.
Your local scene will decide who will best represent the Smashers of that area.
They will communicate openly with other Representatives and form a Local Network (city to city) and ultimately a Regional Network (state to state).
These Representatives will have a lot of authority invested behind them - theoretically the ENTIRE Smash Community should be content with who is representing them. And these are the people who will be a new "backroom" which does away with secrecy and swears to uphold the values of their constituents.
Of course we cannot expect this to be a perfect system as it is unreasonable to ask of perfection (Nirvana fallacy) - I bring this up because this will NOT guarantee you get every last ruling in your favor. This system is not going to be set up to play favorites and will come with checks and balances so, for example, a group of Donkey Kong players cannot get a competitively viable Stage banned just because it is a weak Stage for Donkey Kong. This system is looking to guaranatee a middleground that everyone can be "okay" with.
As long as that "constitution" is ratified - that is acceptable by EVERY region involved and the local Smash scene is represented by a TO/Rep who adheres to that constitution then you have yourself a Smash Republic... for as long as you can keep it, ma'am (to paraphrase Benjamin Franklin).
*shoutout to t1mmy for coining the phrase "frontroom" to describe a public and transparent alternative to a backroom.