I totally agree with you on the Shadow Shard maps. Though there is the Cave of the Ruladak, even some parts of The Shadow Shard could be successfully implemented. Storm Palace outdoor areas(It just looks cool

), and Cascade Archipilego would be awesome. I am waiting to see if they would put them in as Rularuu the Ravager figures deeply within my villains origin story. But yeah, you said it. Shadow Shard maps are awesome to look at. And adding the Rularuu AV's such as Faathim, Ruladak, and Lanaru would be very sweet.