Would you like a spoiler-filled deep dive on the unresolved plot threads or the comic continuation?

This plot device was a double-edged sword. It allowed the show to bring back beloved characters like Jack O’Neill and Samantha Carter, providing a bridge to the old continuity. However, it also generated the show’s most contentious storylines. Episodes featuring the crew "swapping bodies" to visit Earth often resulted in soap-opera melodrama and ethically questionable storylines (including a controversial body-swap infidelity plot).

No discussion of SGU is complete without mentioning the "Long-Range Communication Stones." These devices allowed the crew to swap bodies with people back on Earth.