It looks like BlackFaq currently has about 80GB of content on their torrent. You can have 20GB of space on Mega for free, so that would be about a fourth of BlackFaq's current content available to people instantly (if they haven't hit their Mega quota) without needing to wait for a seed.
The thing that worries me about torrents is that it kinda seems like a guarantee that they won't be seeded eventually, which means the public loses everything, and that's obviously worse than the 3/4ths of content that would be lost if someone like BlackFaq switched to just uploading 20GB on the free account and not sharing the rest of their stuff at all.
What I don't know about Mega is if it automatically takes stuff in free accounts offline due to inactivity (if you haven't logged into your account for a year or whatever, then all your stuff is deleted from the server and other people can't get it anymore). This seems like it would be a smart decision, because otherwise the amount of space that's taken up on the servers will always be on an upward progression, which means costs will also be constantly increasing. So either the inactive free stuff gets deleted after a while, or Mega just goes out of business because they can't handle the costs of all the bloat.
That's just me thinking out loud, I'd say the bottom line is that there isn't any one clean and simple solution. I think the best way for data to be preserved is always for it to be in at least two different places. If four users each had 1/4th of BlackFaq's material on a free Mega account, while also seeding the torrent (or also hosting it on a Google Drive, etc.), then everyone would have two good options to get those packs. But ultimately, the reason why I think of torrents being inevitably doomed for a game like this is because there just aren't enough people who care about the game to take on something like that. And there are even fewer people who care about any individual girlpack, since tastes are so different between users.