D&D 5E (2014) Suggest for Adventures to Place on Isle of Dread

[Zardnaar]

It all comes down to that central plateau lol.

Some ideas.

Lost city with techology/barrier peaks type adventure.
Something demonic related.
Spelljammer landing port
Lost remnant of the ancients (Netherese, generic ancient race of power).
Resources (gold, spice, Dragonshards etc).

 

[Gaxkang]

Caverns of Thracia might work well