Just curious as to how others are handling this. I think HC does a good job with Macedonian etc pike, encouraging long battle lines. However, this does not work for the Swiss etc of the 15thC. They deployed in blocks or columns far deeper than the 16 men of the Successor period. As HC has no particular rules for depth there is no reason for the gamer to follow this example.
I realise this may be seen as out of period for HC but it can also apply to classical pike (and other infantry) who occasionally deployed very deep. Romans at Cannae, Seleucids at Magnesia etc.
Perhaps add +1 to sustained for every extra 2 ranks over the norm?
Not intended as a criticism of the rules as they can't cover everything. Just wondering what others are doing.

