I think as a starting point it is reasonable to expect that the owners as a whole be asked to decide what approach to take.
As this is a change to common property it may come under the ambit of section 108, which requires a special resolution of the owners to change it. The Committee doesn’t have the power to do that, and from what you have said it isn’t even the Committee, it is a subset of the Committee. I suggest you write to the Committee and strata manager and ask why this isn’t being put to all the owners for approval.
Rosebank – your comments aren’t really helpful.