Just some thoughts on the idea of transmitting oneself.
Assume for a second that it is really possible to transmit a person to another planet (person being defined as a qusp here). Is it therefore possible to either disrupt the transmission, or even intercept/kidnap that person? If the transmission is disrupted, does the person lose parts of their memory? Could the person conceivably die? And what about the potential of kidnapping a transmission? Not that there would be much value in doing so, as these transmissions take many (hundreds) of years to reach their destinations, but it is conceivable that someone could attempt to build their own slave force of captured people. I've been watching Street Fighter II V lately, and the antagonist group Shadaloo (pron. Shadow-law) implants chips into unwilling people's foreheads to assume complete control over them. Could that be done to captured people? Is it possible to make a qusp that allows someone to control the mind of the person occupying it?
Given the context of the story, these situations are unlikely to occur. There has been no major war for a long time. Life is generally peaceful. But these are things that would need to be considered should something like the qusp come into being. Also, what would being transmitted feel like? I don't think I could stand being in a complete null for hundreds of years. I think LIVING 100 years is long enough; this would probably drive me insane, because I couldn't do anything. If it was like being in a comatose state, then I would probably have no issue with it, as I would just wake up 500 or however many years later. If I had to retain consciousness for that entire trip...that would drive anyone insane.