Can't this be approximated by using the share feature with timestamp, pasting the URL and then just reloading the page each time you want to loop? Not as convenient, but a bit less overhead.
that's a good hack!
However, I find it pretty important to have an uninterrupted flow during my practices. In loopingtube.com you have a list of all the clips on the side, you can seamlessly move between them with hotkeys. You don't have the overhead of changing between a list of links you manually saved.
Also, I implemented a pause between loops of customizable length, where you have time to repeat.