The dragons in the House of the Undying were great in last night's episode but SPOILERS it did make me wonder/worry what will happen when season three begins and she deals with the slavers, one of my favorite moments in any of the books. She's already used that move.
Having just re-read the House of the Undying chapter, it does indeed end with one of her dragons lighting the warlocks on fire.. So it's not like HBO is going entirely off the rails here.
In other news, UGH A WHOLE YEAR TO WAIT NOOOO