Grass stains
Tone them DOWN, it's ridiculous. No rain and by the 4th quarter every players that started has the exact same stains on their uniforms. Every player's shoulders look like they're playing in a rain game on a muddy field.
Do the people responsible for the grass stains actually watch football? On a clear day on natural grass every player doesn't come out looking like they were dragged by a car through wet grass. Maybe a few players will look rough, typically RBs and linemen. Few grass stains on a QB and WR, it varies. Not in Madden, if you play outdoors you WILL look like went sliding through wet grass and mud.
What you have now for clear weather on grass should be what they look like in rain on wet grass. You need something new for natural grass games in nice weather, badly.