Purely subjectively (though seeing how you operate, this may inspire something backed up objectively), the Brewers seem to prefer a bullpen with multiple arms that can go multiple innings, some of them used as often as 3 times a week. I remember having multi-inning guys in the past - Hader was one for a while - but not the sheer depth of them that we have now. That starts with Patrick and Ashby, but we currently also have Anderson, Wilson, and McCullers, with DL Hall about to come back. That ability to use one pitcher for say, two innings, is really useful in managing workload.