I don't know if this a picky trivial bug, feature request, or as-intended, but FWIW...
Even on the Simulator, when cycling through the list view, the icon does not highlight instantly even though the title does. It's a quarter second or so late to begin the animation.
It would look extra slick to see every icon respond as fast as the title as you cycle through!
If that delay is needed to load the animation frames, then what about this... maybe pre-load all the FIRST frames to allow instant response, THEN have the delay to load the rest? (Devs could take this into account when designing frame 1—or simply double that frame—if that delay between 1 and 2 would cause an unwanted stutter.)