Basically, I'm of the opinion that any feasible design should be allowed in rocket design. As, if the math is possible, I don't see why the ship wouldn't be possible.
There are a few tidbits, that would make it seem like an end game item, and I, would tend to agree. Seeing as the "structure" for such a rocket would likely mirror the design for some type of an ion engine. Since that is likely what it would look like in real life, if a working model were ever to be made by kerbal/human scientist. It would travel "theoretically" at relativistic speeds.
Given the scope of KSP2, I believe this would be a relevant discussion for possible ship designs.
(Please feel free to throw out anything else on your mind when it comes to ship designs for this awesome game! Lets discuss!)
Explosions behind ships are cool, but so is pushing the envelope, to the very brink of the speed of light.
Let the Kerbal Space Program be the first intelligent life form to reach near light speed!
Here is a relevant information, since this is how it works.
The original paper on the feasibility.
https://ntrs.nasa.gov/citations/20190029294
https://ntrs.nasa.gov/api/citations/20190029294/downloads/20190029294.pdf
