(the following is just my personal opinion)
Please do not forget that Fenspace is not only about "source material".
Its also (especially from the worldbuilding perspective) about having a balance between the creation of different writers. Otherwise the Fenspace setting is not working.
My "your ship is much too large" is not a request to state the source of your construction and how your char did it but a remark that a single Fen (whoever he or she is) cannot build something that huge alone. Its not balanced compared to the rest of the Fenspace universe. "Whats balanced" can be bent, especially for non-reproducable one-of-a-kinds (and even more for one-shots for a single story).
"Invincible Invisible winning every fight with a single shot" ships are not only too powerful, they are also very boring from a story point of view. Which means that the existence of a ship like this is suspect in an universe as Fenspace, which runs on stories and drama.
Please do not forget that Fenspace is not only about "source material".
Its also (especially from the worldbuilding perspective) about having a balance between the creation of different writers. Otherwise the Fenspace setting is not working.
My "your ship is much too large" is not a request to state the source of your construction and how your char did it but a remark that a single Fen (whoever he or she is) cannot build something that huge alone. Its not balanced compared to the rest of the Fenspace universe. "Whats balanced" can be bent, especially for non-reproducable one-of-a-kinds (and even more for one-shots for a single story).
"Invincible Invisible winning every fight with a single shot" ships are not only too powerful, they are also very boring from a story point of view. Which means that the existence of a ship like this is suspect in an universe as Fenspace, which runs on stories and drama.