First off, great work with the tool. It's really improved my gaming experience.
However, I would like to make a request to include a "Cancel" button in the transfer window. It's very frustrating to start bootstrapping 10-15 GB of data just to forget that you actually wanted to include another game worth a few gigs as well. So you need to wait for the 15GB to finish transferring, then disable the Ramdrive, then transfer again ~20GB. Ideally, I would be able to cancel the initial transfer as soon as I realize that I need to include more data in the transfer.