This proposal needs far more serious debate.
The number of units in the building has some unintended consequences. Buildings with 4 to 7 units can be blocked by 2 owners, buildings with 8 to 11 units can be blocked by 3 owners, etc. This effectively gives a single owner disproportional voting rights.
Using the number of owners just defies logic. Why should the owner of a studio have the same say as the penthouse owner. Their financial interest in the potential sale is so different.
Looking further ahead, how are the proceeds of a sale proposed to be split amongst the owners, UE, valuation of each unit, just divided by the number of units ??? I can see that being the biggest bunfight imaginable. Even similar UE units can vary in value due to north facing, ground floor, no common walls, etc.
Finally why are these proposals all so secret. We are the owners not some faceless committee.