There's no actual "battle scars" on the uniforms as of late anymore.
Example: Ranger gets hit, spark pack goes off, black mark on uniform to show wound.
Another thing I noticed:
The big bad gains a major advantage and is about to destroy the world. All the heroes, one by one, gaze in horror as the reality is about to set in that the world will end...
...And then someone or something (another hero or mecha) takes out the plot device in the nick of time. Cue heroic music.
Hero: Sorry I'm late, guys. Take care of the rest.