F4LL0UT: It is illegal to share copyrighted material without getting permission from the legal owner or unless the game's terms of use state otherwise - I'm pretty sure that the Mod DB's terms of service state something about this as well. After all, the "mod" basically contains like 99% of all of the original game's content. It doesn't take much more than a cracked exe to turn this "mod" into the full game. That's not possibly okay.
That he's not making any money from this doesn't change anything about it. It's not like seeding a torrent gives you any money and still people pay fines and even go to jail for that.
But even from a purely technical standpoint - including hundreds of megabytes of unaltered data that everyone who wants to apply this mod already has is just unprofessional, a waste of traffic and space.
I downloaded and diff'd with the original data folder, then copied only over the new and adjusted stuff. The final 7z file I made was about 700M, instead of the original 1165M, so definitely some reduction.
But in all honestly, you're kinda just hurting yourself. Sure, this guy shoulda done a better job packing up his new textures. But these really do look amazing in game! I legally bought the game, I have no guilty conscience downloading this mod.
Edit:
hansschmucker: Perfectly. Only thing is that it enables a bunch of debug menus, but you can ignore those.
Also, if anyone cares (like I did) to turn these menus off, you can go into the data\scripts\menus\english and rename release.msc to debug.msc, and release.msc.msc to release.msc. Apparently this is an older cheat, and none of the actual adjustments for this mod changed these files.