Personally if this is to happen id like to see the front row scheme scrapped as IMO its never worked too well, ive found the station works best when theres no batcher and people sort them selves out, and if people wish to wait for front they can. As for back row, theres some potential here to divide the quite wide queues in the station and have a dedicated back row option, not sure how this would work with possible back row fastrack though.