mathaetaes: Storage is absurdly cheap these days. If you can afford to spend $60 on a video game, you can afford to spend $50 making sure you have enough space to play it.
RSColonel_131st: Two remarks to that:
1) Swapping motherboard-connected M.2s is not trivial, as this might even require removing the whole CPU Heatsink for access. So upgrading might be more complicated and risky than just spending a few dozen USD or EUR.
2) Wasteful behaviour to me is no reason to expand resources. Other games patch large binary containers (.pak files or other formats) on the go, without replicating all the data. I've made a suggestion to Larian on their boards. I mean, we're talking already 30GB here, two months after the game's release. That's the size of some other current games on the market.
^That's also why I'm curious if a fresh downloaded "latest version" will have a smaller install size than a Day1 download with all patches.
So put your games on a SATA 6 2.5" SSD. I've done that and I can tell you that the difference in loading times is negligible. Added bonus is that with a drive replicator, you can pretty easily migrate to bigger drives should you need to (if, for some reason, 1TB of SSD storage isn't enough).
The fact that you all have all these disk space issues makes me wonder - are you storing ALL your data (images, videos, music, etc) on a single system disk? That's a *really* bad practice, and I encourage you to move your non-performance-impacting data (images, music, photos, etc) to one or more external disks; ideally redundant ones.
Either go get a couple of external USB drives and copy your data to both, or invest in a NAS. This will both free up your system disk for more performance-sensitive data (binaries, save game data), and will ensure that if your hard drive fails, you don't loose gigabytes of hard-to-replace (or sometimes irreplaceable) data.
If you want to take it a step further, get two, keep one in a closet at a friend or family member's house (off-site), and synch and swap them every 6 months or so. That way, if your house burns down you'll only lose, at most, 6 months of data.
As someone who has lost drives with irreplaceable family photos, it's a worthwhile investment of money and effort. You'll also be shocked at how much space you free up once all that stuff that you're effectively just archiving has moved off your system.