Again... better to whom? The episode survived just fine now for DECADES with what's happened on screen. There's no need to add in extra phaser shots or torpedo bolts or whatever simply so weapons-philles can get a couple extra wanks in. That's not the point of the scene, or the episode. It would add nothing! So why change it? Because it looks cool? Not good enough.
You don't get it. The reason is not "making it look cool" but "making the fight a bit believable and realistic". As it was done originally, it just felt unrealistic and even ridiculous. Why did the Enterprise not fire its weapons? Of course, it would not have a bit impact on the whole since it already is a brilliant episode. However, if any effect remastering would make sense and improve the visuals and the episode coherence, I really feel, IT SHOULD BE HERE.