So I ran this module last night for my party (MoP Human Battlemaster Fighter, Warforged Grave Cleric, Warforged Abjurer, and High Elf Evoker), and it was interesting. A few notes:
I like how the module noted various spells to circumvent the pyroduct, but overlooked the most obvious way to circumvent it -- Soarsleds. Even outside of Sharn, it is 60 ft per round for 10 minutes. Plenty of time to coast over. XD
Also, the final encounter was fairly trivial for my party since one of the wizards had Sunbeam. So it took them maybe two or so rounds... Really traversing the terrain and avoiding the magma was more of a thing than the vampire was.
Incidentally, I am curious (as are my players) about the info in the war room. No doubt this will unfold quite intriguingly in the next few modules, and hopefully they will not have to kill those Undying Paladins to protect the Oracle...