I feel like the weapon system change was more to balance PVP. It just doesn't feel consistent or fluid with the PVE side of Destiny. Nothing substantially differs about the D2 strike from a typical D1 strike so I can't make sense of the weapon system change in PVE. It just makes it feel even more grindy, couple that with the poor recharge rate of abilities and supers and it just sort of gets dull very quickly.