I was actually thinking of doing this as a block device instead of a file system and I agree that it may be the more "natural" solution. However, the software

I was actually thinking of doing this as a block device instead of a file system and I agree that it may be the more "natural" solution. However, the software tries to make predictions for which files will be accessed and doing this on a block level would be much harder. Plus, I had to learn fuse to write this and I thought I'd start off easy :D