Welcome aboard jersey. I've been here over 2 years and still feel like a newbie at times. The buried loop was something I thought was new until it was pointed out that it was just a UCR. Working with some aging mental capacity here but visualizing the loop with constrictor around the SLS sounds great. My loops are fixed since I use the same hammock and don't need to adjust. I have found on my present hang, every night for 1 1/2 months, that the only 2 trees close to the RV are at my maximum span with the SLS and short of a step ladder I can't get the huggers high enough up the tree to keep my butt off the ground unless I sacrifice sag. My only option is to remove the buried loops and reposition to affect the sag. With your loops around the SLS adjustment would be simple. Thankfully my system is in constant flux and subject to be altered at any time. Will be looking at incorporating some of your idea.
Thanks for joining in with your ideas. This is what keeps the forum alive and growing.