Another vote, this would be an amazing feature. Wish I'd seen this thread sooner, I've been waiting and waiting for a new beta - checking every few days for months now in hopes of something and finally decided to check the forum and see if development was still going on.
Rule based file placement would be a killer feature, taking the current "ordered file placement" abilities of the current plugin to the next step in granularity. I just hate related files to get scattered all over the place. Ordered file placement has cut down on that problem significantly since it fills up a disk at a time, but its not perfect obviously and I end up doing way more manual file relocating than I'd like to.
mvd got a reaction from Alex in StableBit DrivePool - Controlling Folder Placement