The devs seem willing to touch up the game here and there but they usually won't touch the "core" from 1.0. The sounds, a lot of the old combat animations, nothing. This game kinda suffers from its 1.0 origins as the devs say it limits a lot of things. I think you would get this response to overhauling the old sound files.

The devs also seem hesitant to update older content. It has been like pulling teeth just to get them to streamline the 2.x questlines that often cost them, potential players. They have also stated they can or will not update the older world maps or add new things to the old content like more Chocobo ranks.

I personally think the Heavy Shot sound and animation is awful. Sounds like pulling on a wet rope and the arrow is pulled a foot away from your chest. I wish things like this could be fixed.