Apart from all of the above, you and any other neighbours whoi don’t want to be bullied out of the building should probably examine taking a case to NCAT bor either or both of the options open to you to protect your interest.
The simplest would be a simple Section 138 motion to force the Owners Corp to maintain and repair the building. As a precursor to that, you could send a letter to the EC and strata manager with a list of repairs etc that you think should be attended to.
Second, you should consider applying for the statutory appointment of a strata manager on the grounds that the best interests of all owners are not being pursued, specifically, the building is being run down so the RSL can buy it at a knock-sown price.