Glowy stuff is cool. I have to admit I really like the look of the glowing hot rope on this page, especially set against the cool blue of the nighttime tint. As for the hot rope itself, I just thought it would be an interesting technology that’s fairly basic. Nothing fancy, but believable. Plus, it seemed like the most elegant solution to solve the dual problem of (1) restraining the bad guys so Roka and company could get away, while (2) not leaving them tied up and at the mercy of the elements indefinitely.
For the record, Roka has a bit of the hot rope hanging from his belt on the cover to “The Big Snow Job” issue #1. It’s certainly not the entire length; just enough to look kinda cool. I have no idea why he’d be carrying that small amount there. Maybe he just wants to keep his left thigh warm.