Funny how all these people demanding "better and more writing," can't be specific on what they want done. It's just a bandwagon catch-phrase to justify their whining that the series is over.
Thought it was a great ending that wrapped up every single loose end, and left the door open for at least 5 potential spin-offs either via new books or films that I could see.
To put it simply nothing cool happened this season. Well I thought it was cool when Kaleesi burned everyone alive, because it was the only interesting thing that happened. But you want ideas? Were not writers... But!
That fire guy, when they were fighting the undead, he could have kept getting killed and coming back to life. He could have flamed up in the middle of the fight and shot fire from his dead eye while burning himself alive.
Arya, low hanging fruit here... At some point pull unexpected face change? Or some new skill from the faceless god.
Fire chick, enhance the dragons fire? Summon a fire creature to fight. Blow up dead bodies with corpse explosion. Instead she lit some weapons on fire... In the same manner tar could have achieved. At least they should have turned bright orange. And let us see that they could now cut through shield\weapons and bones with ease. Leaving a simmering red hot smoking gash in anything that was cut.
Doth raki, actually see them do some fighting. Boasted to be some of the best in the world... well I thought one day we would get to see that.
Unsullied, Grey Worm, Jorah Mormont the same.
The mountain. I mean he fought the hound, that was ok, but seeing him do some real damage would have been awesome. Like smashing around 3-5 soldiers at a time. Then maybe finally facing the hound and have that lady knight step in and start help the hound when all hope looks lost. He could have been taken control of or infiltrated the ice king because he's undead.
Maybe say the dragon is flying by, The Mountain pushes a crumbly castle wall onto the dragon, then after the stones hit The Mountain lands on the dragon furiously stabbing its head and or eye with a giant sword.
Bran Stark summon an animal army... Tell Arya to take his face and kill the night king. Activate that tree god thing, have a bunch of roots start taking down the night king, trapping him or helping with the defense pulling undead soldiers into the ground.
The Hound, what I listed or getting over his fear of fire from the help of that fire guy. To go on and burn to death while holding off an unrelenting force with maddening rage.
Dire wolf, go get a bunch of other dire wolfs and come back at the peak of battle.
Undead Hodor?
The dragon could have dropped big rocks on those ships during the night so they couldn't see him and or dove under water taking them out from below. Say at one point during the fight, the dragon gets shot down. Kaleesi is floating in the water. The bad captain guy comes up and is about to shoot her. Then bam from below the dragon bites the ship in half! Goes back under water and begins his under water siege.
Well that took me about 30 minutes.
P.S.
The dragon is flying by the crumbling red keep. The mountain pushes a portion of the stone wall down onto the dragon. Following close behind the falling rubble the mountain lands on the dragon. While spiraling towards the city streets the mountain furiously stabs at the dragons head. Upon impact the dragon is knocked out. Kaleesi foot is stuck under a rock. The mountain walks up to the dragon with a spear taken from a dead unsullied. As he lifts the spear, The Hound suddenly charges The Mountain. The Mountain narrowly misses the dragons eye. The 2 fight it out, the hound does some damage. Looking hopeless the lady knight steps in. An orange substance pours out of the spear wound. Parts of the dragons flesh catch fire. The dragon wakes up, flies to the ocean and dives in. Flash back to The battle with the Mountain. The new pair are beaten back. A doth raki soldier rushes in. The mountain ***** slaps the horse. Knocking the rider\horse to the ground. Kaleesi holding onto a piece of wood in the ocean is just about to be shot by a scorpion. Her dragon bursts up and splits the ship in half. With his wounds cauterized he dives back down into the depths, picking off the ships one by one.