HBO - Game of Thrones SPOILERS INSIDE. you have been warned

[strife]

People have serious problems keeping book and other media mediums separated

  Yes the battle plan was pretty stupid and the Dothraki were completely wasted for no reason.  Yes the dragons were used poorly.  

I have seen this complaint but no one actually offers any opinions on what exactly they should have done that creates a different outcome. 

The Dothraki didn't serve any purpose, other than for the show to show you the overwhelming numbers the NK had.  The dragons pushed too deep. They should have been stationed around choke points closer to the castle.  The only defense against the dragons was the NK, that would have forced his hand in pushing to the castle where he would be susceptible to the dragon glass ballistas we didn't have.  Or at least get him close enough to where you can see if one dragonglass arrow would take the dragon down.  They needed more choke points. Look how long the dead just stood there after they set the trenches on fire. That was prime time to dragon fire the hell out of them. They needed more of this. 

You kill the zerg with choke points and AOE, you don't send in your zealots. 

Here's a decent discussion on tactics for the battle.  Some of it good, some of it bad : https://www.vox.com/culture/2019/4/30/18...l-military