Robert was indeed a usurper but his legitimacy was established with the King's overthrow and the support of other vassal kings. Here, we find ourselves with a "Kingdom" in which almost all feudal ties (the vassalage system relying entirely on dynastic connections) have been severed at this point. I really think Cersei reigns primarily because everyone looked around after that explosion, saw that there was no one left to raise any sort of voice in opposition, those who have made claims are already rising in revolt, and the Lannister family still has many holdings and wealth to work with while she personally has an unstoppable killing machine by her side lol

At this point it resembles not so much the High Feudal society of the late middle ages as it does the chaotic years of the early middle ages, when rulers were little more than absolute autocrats and warlords with very little in the way of law, legitimacy, or "national" identity. She has even opposed and destroyed the temporal presence and authority of the church itself. It'll definitely be cool to watch and see what happens from here; I honestly wouldn't even want the damn throne at this point lol

But why do people think seeing famous people in roles would be immersion breaking in the first place? Are actors not famous and recognisable too? If seeing a famous fighter or musician breaks immersion then how come seeing a famous actor doesn't?

I agree Cersie will die. But not this season. Season 8.

Sorry for the late response but i think that she will die this season because Season 8 will bet the shortest season with only 6 ep (although they said that the final one will be the longest in the series). I think that the Last season will entirely focus on the Winter War no more side quests.

Are you trying to tell me that after all the #WinterIsHere tweets, advertisements and mentions from the GOT marketing team, that Winter is actually NOT fully here and the the real Winter storm is season 8!!!! 

On a more serious note, i actually believe you could be right, it makes sense for all the "side quests" and other political storylines to be finished off only to realise at the end that they should of listened to the North and that none of their issues mattered as Winter really is coming then season 8 to focus on what should be the biggest, longest war of the whole season.

As insane as the budget is I don't think they'll be able to afford portraying Winter properly.  Winter actually started getting bad when Stannis was at the Wall with Jon.  Yet, even now in the north on the showwe see maybe six inches of snow a sopposed to the six feet one would expect.  For example, back when Reek jumps off a wall into feet of snow works, a dusting is just asking for broken legs and ankles. 

If they holding back then yes, you have seen nothing of what Winter is and why the North prepares for it for years.  Imagine Winter in Siberia type place going on for years (winter varies so could be a year, could be ten).  That cycle would leave a mark seeing it a few times in your life.