Yes BA could implement the this
they could also implement a rolling membership year
they could allow people to change their membership year end date.
they could get rid of BoB and reinstate free food in SH enonomy
the could stop charging non status pax for seat reservations
they could change the lounge guest policy so people had a number of coupons they could save up for use with the family holiday rather than have one guest per flight
They could also rescind the no tagging bags through even on separate BA flights
ALL of these have been suggested on here before and discussed as infinitum
But BA won’t do any of these things.