I'm going to be a slightly dissenting voice as things pertain to Cersei.

 

I generally don't want her to be successful either, except when she's legitimately acting as a parent and/or strictly in the best interest of her children. Otherwise, it's highly rewarding as a viewer/reader to see her constantly get outmaneuvered by superior schemers. That is her fatal flaw, as I see it. She's nowhere near the manipulator she thinks she is, that was her father. I think GRRM uses her, and to a lesser extent Theon, in an attempt to balance the galaxy's worth of excrement that gets dumped on the Starks throughout the series.

 

As for Arya, I'm pretty sure she's safe if my logic is correct. Since she failed to assassinate Lady Crane, the life-debt shifted to Arya. Jaqen sent the Waif to collect with specific instructions which she did not abide in addition to seemingly failing since Arya still lives. The debt now shifts to the Waif...the remaining question is who collects? Arya, Jaqen, someone else?

 

I didn't comment on it before but I, too, am glad the Hound is back. His character has always had this subtle spark of humanity going back to his interactions with Sansa surrounding her father's death, substantiated by his time with Arya. Dare I say it, he very well may be the first character in the series to come full circle and actually get some retribution and hopefully closure although it will likely end up costing him his life...who cares? 

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