Yeah it doesn’t have to be too descriptive. Although I would prefer if the Eye was described for what it actually looks like in canon.

In the new canon comics, Vader actually met with the Eye. And Vader obviously placed him in charge with defending his wayfinder. I think it would be interesting for him to recognize Kylo as the heir of Vader initially (which doesn’t happen in the original novel), and then they could talk from there. I also think it would be interesting if Kylo killed the Eye after he got what he wanted from him.

EDIT: Maybe he could get him angry by saying that he is too conflicted still, but not to fear because he will soon discover his true self. So Kylo kills him in order to try to prove that he can be dark.