I don't think it's a good idea to just put the Web Novel page into the Light Novel page like that - and I am saying that as the one who usually dismisses the Web Novel content otherwise. While the Web Novel content is one thing, I DO think that the Web Novel at least deserves it's own introductary page. An important reason for the fact that, as I have mentioned this blog post, the amount and names of the arcs in the LN are very different compared to the WN, aside from maybe the first two arcs and the occassional overlap with the WN arc name.
On a related note, I think it might be a good idea to change the LN Volume pages into the name of their respective "arc name" if available, since we do that for manga and anime as well, i.e. naming the chapters/episodes based on their titles, hence it'd make sense to name the volumes like that as well, which means we don't have to create new "Arc pages" for the LN.