Please consider adding alternative ways to get Nexus lights.

[BillyBones]

I don't get it. You get light from basically doing everything.
Treasure maps? (or at least Alex maps) LIGHT
FATEs? Light!
Dungeons? Light!
Raids? Light!
Trials? Light!
Just pick something and do it. Technically they do offer "consumables" that give light because everything in the game that could possibly pose a challenge to you (except hunts) gives you light.

The light that stuff gives is shit. You need to aim for bright. Just playing your game casually and doing your usual thing won't get you your nexus. You won't get it without tons of farming.