Different people choose where to start in the elevations. Some start at the bottom, with socks. Others start at the top by being careful with how they cover their hair. Others choose other areas of life/halacha to start their aliya altogether.
Rabbonim should mandate adherence to halacha to the klal. Individually they can advise, prod and discuss chumros. Chumros can not be legislated. Once they are universally accepted, thats something else.