At the moment Cap is using his original old AA animation for his signature 'star-spangled strike'. This suggestion is NOT asking in any way whatsoever to change the stats on the power or to change what the power does in game mechanics, damage etc. This suggestion is a request for a new visual update for cap's signature power, to give it a new unique animation of it's own.
The current old AA animation displays cap hovering in the air then dropping his shield down as a huge massive impact. Instead of that, how about it mimics cap's combat moments in the battle scene of the movie "avengers: age of ultron". Specifically, (since we have so many players asking for cap's motorbike) cap rides his motorbike into target area where power was executed, throws his shield and it hits every available target (using the animation of shield bounce, this would have to be played in fast motion so it doesn't affect dps) (link to scene: 
), then somersaults his motorbike into the area center for a massive blast (link to scene: ).
I thought it'd look cool. Would be funny thinking how cap gets that many bikes for crashing each time he uses his signature though.