Many of ANZ's group one executives will be in the firing line if the bank pushes on with a cost reform plan of chief executive Shayne Elliott.Over the weekend, ANZ clarified that it now has 130 group one executives, down from 165 or so when Elliott took over six months ago.Many of the remainder were on the cusp of receiving a termination letter not too many weeks ago, if narratives reaching Banking Day are reliable.Elliott is the principal champion of this drive, which fits board cost saving and profit maximisation targets.Elliott's associates intervened to defer the reform. Mass management sackings would be too disruptive, advisers warned the board.So ANZ filed away the letters of termination, printed and ready.The next round may lead with the removal of custodians of businesses slated for sale. UDC, ANZ Shares and a swathe of Asian interests feature at the head of a catalogue sure to lengthen.Exiting businesses sometimes includes closure of specialist internal businesses of no great repute, many with a dedicated a group one executive.Dozens or scores of ANZ group one executives are in the firing line.Culling management ranks in style is pretty rare in an industry known for a history of doing so mainly among the lower paid.