Both TeeDee and Frawg have designed modular suspension systems that allow them to switch out components to suite their specific needs. This gives them great flexibility and adaptability for their hammock setups.
When I first started following their lead I, too, made modular components: stand alone slings with eye splices at one end and whoopie loops or UCRs at the other. Everything buried and neat and very strong, but also involving more work to make.
I was getting ready to replace my hammock lines with one of my fancy slings. The eye splice bury took up about 10 inches of line that was un-usable (couldn't tie a knot with it or make a bury there.). Add 10 more inches for the whoopie bury and a couple inches to separate the burys and suddenly I have effectively made my hammock 2 feet longer at each end.
The hammock trees in my backyard are exactly 12 feet apart. My hammock is 10 feet long. Adding 2 foot long whoopie slings at each end... well you do the math.
Then I realized that I had been comfortably using rope tied to the whipping of my hammock for more than a year, a knot tie by the manufacturer. I never worried about that knot. It had always held, never slipped. And even though the eye splice of my sling was stronger and more aesthetic- well it wasn't really necessary.
So I simple added the 10" whoopie bury to the line tied to the hammock and by combining the knot with the whoopie got what I wanted (simple adjustability) in a shorter distance. Yeah, it's not as aesthetic, but it is plenty strong for my needs, works, and fits the space I have.
To quote TeeDee: "what's not to like."