Drop rate of higher gear is high at lower light levels, but will slow as you reach the max. There’s a point at which blue engrams top out (260 according to players).
D1 in its final state looked like this:
Blue, purple engrams max 385 (used to be lower, I forget what it was, they raised it for AoT)
Faction rep max 390
Raids, Nightfall, Crucible max 400
The idea is that you can quickly get to a level where a lot of high level activities are within reach (IB, Nightfall, normal mode Raids) and then you have to work really hard to grind out the last 10 or so light levels. My guess on D2:
Blue engrams max 260
Faction rep max 280
Raid, Nightfall max 300
Exotic engrams max 300
I am sure there will be a grind for max light level that’s very time consuming.
ETA: looked it up to see.
It seems that all that normal business will get you up to 260, which it seems is currently the max level for blue items. After that, vendor legendaries will get you up to 265 with the ability to push them to 270 with mods. After that, it’s all about Milestones, which you can see by opening your director and holding L2.
No info on how high you can expect exotic engrams to drop at, though.
