D1 Beta Player here, I love all the changes. Ability spam is less of a thing, forcing you to think about when and where you want to use your class abilities, grenades, and supers. Also, the guns feel really good, but I think Auto Rifles and Hand Cannons need some love. Gunslinger, Arcstrider, and Sentinel are all great. I haven't gotten to try Striker yet. Dawnblade and Voidwalker are the worst classes, honestly. Dawnblade is slow and awkward to use, and the new Nova is... Strange. I gotta use it more though. Good beta, it just needs some fine tuning before launch. I'm excited.