What makes you think that we haven't already got individual rosters? (OK its an extreme view!), but, since the shift pattern we work at the Management retirement home on the South Coast has become a case of waiting to see what shift you are on when the rosters come out, and the choice of shifts seems to be getting ever larger, surely these are already individual rosters?
For the Ops staff to have morning shift starts of 0600, 0630 or 0700, the afternoons to be 1000, 1100, 1300 or 1400 ( I think) and spins to start at any random time that ends in o'clock, as far as I'm concerned my roster is already individual.
Then take into account extra days, leave etc..........