Weekly Heroic gives a guaranteed Legendary. Nightfall doesn't (60% chance).
Nightfall
still gives below 290 and 290-300 items. Which are not progression. (You can get up to 310, but it's not a guarantee & not likely.)
Strange Coins & Three of Coins don't feel exciting as reward. "Oh boy, a chance to get loot later."
Exotic drop chance unchanged, which as I see it would be a reason to do the nightfall specifically since 3ofC lets me get exotics from anywhere else in the game.
Two smart changes:
- Move quest rewards off of boss death to the rewards screen. People were seeing literally nothing in the post-game screen because they already got all the rewards off the boss. This right here will dramatically change normal player's perception of the Nightfall.
- Adding ghosts to the loot table. (Why weren't they there before? Crikey.)