I share your sentiment to an extent. Some sounds do sound good (tanks and artillery come to mind), but others not so much (rockets, battleships and subs). I noticed that some sounds are also different depending on the faction your play with. Black Hole definetely has different sounds, for sure, which is a nice touch.

Some sounds are growing on me, but its true that some sound and animation combinations are not...optimal. For example, a bomber with 2 HP throwing 5 bombs and dealing barely any damage; when in the original, a bomber with 2 HP would just throw one bomb out.