It's called "Ordinator", and it's a full-on perk overhaul. 418 perks- to my understanding that makes it the largest perk overhaul ever created.
http://www.nexusmods.com/skyrim/mods/68425/?
This means he now has an enchanted item overhaul ("Wintermyst"), a Magicka overhaul ("Apocalypse"), a shout overhaul ("Thunderchild"), a race overhaul ("Imperious"), a Standing Stone overhaul ("Aurora"), and two quest addons ("Spectraverse" and "Dwemertech").
Laz's mods are some of the highest-quality Skyrim mods I have ever used. Check them out.
There is an option to donate money to him for his efforts on his mod pages. Even if you don't play Skyrim, you may want to consider it as compensation for his work on Median (as there was never an option to donate to him while he worked on it).