Blizzard cranks the dial on Diablo 4's endgame progression so its brutal new dungeons don't tear you apart

pcgamer.com:

Next week, Diablo 4 will drop a new endgame seasonal event that is so hard you might not be able to finish the last tier of it. Blizzard demonstrated it on stream yesterday and promised that it would challenge the most powerful builds in the game. Possibly out of mercy, Blizzard will make it much easier to improve your character in the same patch, saving you time and misery as you attempt the Abattoir of Zir.

Patch 1.2.3 will go live on December 5 and will include significant improvements to the speed of leveling up your Glyphs, Diablo 4's endgame progression system. When you hit level 50, you stop gaining skill points and gain Paragon Points instead. As you draw a line of upgrades on your Paragon Board, you can unlock sockets to place Glyphs into. Glyphs let you target specific stats, like Critical Strike Chance or Vulnerable damage, to empower your particular build. And by completing Nightmare Dungeons, you can dole out XP to each of your Glyphs to increase their bonuses.

Despite how much faster Blizzard has made character progression in Diablo 4 since the start of season 2, Glyphs are one of the few remaining things that move at a glacial pace. Glyph XP from Nightmare Dungeons is far too low for how easy it is to push a character to level 100, leaving you with an exhausting grind as you run dungeons over and over to boost the seven or so you use. In the next patch, it won't take nearly as long if you have a good build.

Nightmare Dungeons from tier 18 and above will have increased Glyph XP, with the most substantial increase at tier 75 to 100: The patch notes say tier 75 will go from 156 XP to 239, for example. Anyone with at least a somewhat optimal build should be able to complete Nightmare Dungeons around tier 50