I think they should open up the class trees like they were in D1, been saying that since day 1. But I would rather see them add in buffs or changes with mods or make ghosts actual worth while. Hell the perks on ghosts are already random how about making them useful. We already see exotics with minor perks for our class abilities. That shock wave that Warlocks get on their rift the Titans have one that sends out a solar blast from the barrier. And of course there is the whole Jester thing for hunters. But I am talking more like you but have it tied to a ghost. Take 10% less damage from solar damage while in the rift. Activate a overshield that lasts 3 seconds when passing through a Towering Barricade. After dodging a ghost image is left behind that last 3 seconds.