Even the so called dead Ewok (Corpsey) moves a bit after being hit and it's never clear if those Ewok groans are coming from his comrade in grief or from the forementioned hit Ewok in pain.
The ground battle is more like hairy children playing war with their Stormtrooper pals than a genuine battle.
This will sound like blasphemy to some but part of the problem is John Williams' music as it was used (sometimes against his intensions) in the theatrical cut.
It's bouncy and upbeat, while we want the rebels and their allies to win no one should ever make out that killing people (which is what war is) is a bouncey upbeat activity. The score can underscore tension and action but not paste a jolly glow over a blood bath.
If you think I'm being OTT try watching any of the other battles in Star Wars with the Endor ground battle music playing over it and then try the opposite.
I'd rather have no music in the ground battle at all than what sounds like at times like a Keystone Cops score.