The damage type is no longer as prevalent as it was in previous editions. This is in my opinion, a net loss for the game. Why use a maul when a great sword will be better? Weapon vs Armor was also a good thing and I sometimes wonder if it would be nice to make a table adapted to 5ed.
As a DM I also added the cleave damage type for axes. Cleave is blend of blunt and slash damage type. It always work best against whatever it up to. But the damage is usually not on par with a sword or a full blunt weapon on a non resistant target but it would always be at full capacity. Since orcs have a lot of shaman using undead, mainly skeletons, it was this efficiency that the dwarves liked so much about axes (in my campaigns at least).