There are many legal and proper "GnG" developments everywhere. If your concerns are privacy and security, then by all means move to a proper "GnG" residence. Don't try to form an RA to coerce residents into signing up illegal "GnG" schemes please.
There are many renown award-winning developers such as Sime Darby Property that are offering top-notch security features that come with perimeter power fencing, CCTV surveillance, visitors management system, 24-hour guard patrolling system, emergency panic-button, call-assist, etc...
There are plenty of choices out there. Below are some recommendations for you: