Wow, I would've thought the base game took up more storage due to the graphics (and Farfield being like 2x of what it used to be) but it's pretty compact! I saw the new changes and they're pretty neat :)
Btw, after doing some non-Nix runs, Nix's default light radius genuinely helps a lot with navigating in the Void layer. I think it's a good trade for the hardness in Umbra.