You can have the best sets, CGI and actors but if you don't have a great story and dialog it doesn't matter.
Star Wars prequels come to mind.
The last episode made up for the prior two lackluster ones though I thought a few of the characters were out of.. well character. Your going to tell me Arya is going to back up now when she is on the cusp of killing the queen? A motivation she has had for years? And just Dani frying Kings Landing after freeing the slaves in the other city? She has nothing to gain by doing this, everyone is already scared witless by the women with a fire breathing dragon who has just laid waste to an army. I know, madness runs in the family.. which Jon is part of.
Can't have it both ways.
And yes Euron coming ashore unwinded and unwounded after being blown out of a boat and swimming his ass across the bay just as Jamie comes ambling by was ridiculous.
Just some lazy writing.