One of the big criticisms of the battle scenes in the Prequels was that they were too impersonal. On one side you have the Separatists' Droid army, and on the other you have the Republic's Clone army. Neither are invested in the cause they're fighting for since they were manufactured to fight. Which makes their conflict impersonal to the audience. It's also that way to an extent in the Original Trilogy. We root for the Rebels and the Ewoks (if you're not the kind of person who'd love to see them slaughtered en-masse) since they're genuine people with a cause they'll put their lives on the line for. The Stromtroopers on the other hand are always completely impersonal to us. In fact, a Star Wars newb could almost (and I stress the almost) be forgiven for thinking that they were robots. Battle scenes featuring the Yuuzhan Vong wouldn't face that issue because the war is deeply person for both sides and it wouldn't just be big groups of factory produced people shooting lasers at each other like before. Also the fact that the Vong warriors' and New Republic soldiers' faces are almost always visible would help that too. And since the Vong don't use conventional weaponry, battle scenes featuring them would be a lot more interesting than the very bland ground battle we saw in Attack Of The Clones where it was just Droids and Clones shooting each other. The New Republic have blasters and grenades but the Vong mainly use their Amphistaffs, which despite being able to shoot blinding venom from their mouths, can harden or flex to be used as a spear or whip and can even stand up to a Lightsaber. The Vong are basically bringing knives to a gunfight but they're living serpentine knives that would be scarily effective. The difference between the two sides' weapons would add a lot of variation to the battle scenes since it would require a lot of close quarter fighting which would only help in making the scenes more personal for the audience and allow ways for battle sequences to be choreographed and shot differently.