Would it be cool? Sure. But not every subclass needs to have access to everything. Air dodge makes sense for Top Tree Dawnblade, because in air mobility and arial combat is a big part of that class’s identity. While I do believe there can and should be aspects of our characters that are present on all subclasses, like the Titan shoulder charge, or the Warlock’s summoning an elemental buddy, or hunters having a ranged melee that applies DOT or a status effect. I do think there are things that should stay exclusive to specific each character and a specific subclass. For example I’m not a fan at the moment of every class getting a fragment to allow invisibility. And to a lesser extent one that allows devour. Invisibility should stay exclusive to Hunters outside of the Hunter casting it on a mate or activating a weapon perk like Rat King. I believe each class should be unique, and with each subclass fill a different role in the fire team.