Spoiler Alert regarding Seasons Three, Four, and Five. Major Spoilers! If you've not read through ADWD, then skip this post.
Kiwi, I think you're absolutely correct. But how else do you convert the book? Here are the numbers on POVs in ASOIAF, not including prologues (five) and epilogues (two)...AGOT had eight; ACOK had seven old and two new; ASOS had eight old and two new; AFFC had five old and seven new; and ADWD had ten old and four new, I think. By the end of ADWD there have been twenty-four POVs: Aeron, Areo, Arianne, Arya, Arys, Asha (Yara), Barristan, Bran, Brienne, Catelyn, Cersei, Daenerys, Davos, Eddard, Jaime, Jon Connington, Jon Snow, Melisandre, Quentyn, Samwell, Sansa, Theon, Tyrion, and Victarion. And there have been Chett, Cressen, Kevan, Merrett, Pate, Varamyr, and Will as prologue/epilogue fodder. I count thirty-one POVs, no matter how brief. At the heighth of ADWD there were twenty-one active POVs in ASOIAF (not all of them were in ADWD), and at the end of ADWD there are twenty active POVs.
I don't have any answers on how to present them all in a television show. But the producers have not cut out any POVs, in fact they added POVs. By this I mean there are HBO scenes without a book POV character. These include Luwin, Osha, Stannis, Renly, Loras, Littlefinger, Margaery, Varys, Roz, the Hound and Bronn.
Even MORE SPOILERS!!!! Really, stop reading now! The series will be ruined for you if you've not read ASOS, AFFC, and ADWD.
Kiwi, one of GRRM's themes is that military success without solid political framework is useless. We see the Young Wolf, Dany, and Theon have made major military moves while not laying any groudwork for a political resolution after their martial success. Their results speak for themselves. Robb lost his life and his kingdom. Theon lost his title, his men, his honor, his freedom, his identity, and his sanity. Dany had to marry a scheming fop and sue for peace... she was humiliated. Better to be defeated militarily and have a back up plan than to be undefeated without a plan.
Clanny, I hear you. Almost all of the sex is gratuitous, only the incest was not. Many characters are evil, I don't need sperm being wiped off a prostitute's mouth so she can immediately kiss the next customer. That's as artistic as the contents of a chamber pot.