RED update thoughts and feedback

I thoroughly enjoy Mesoranger DDR. Does anyone know what the reward for defeating the enemy is? My team never seems to be able to defeat it, I can get S in Hard mode while my entire team gets B's in Easy mode. Also, would an SS at a lower difficulty equate to more damage with the FEVER and FEVER X 2!!!? Maybe I am the one hampering our success, but I feel the bar charges faster at harder difficulties maybe with more keystrokes.

In case anyone is dissuaded by the challenge, let me dangle untimed no-boom 50% Chaos Scroll of Goodness at you. I can confirm they come from the boxes.

It is a shame this will be gone after today, at least temporarily.

It's hard to beat it if even one person on your team is bad, the Final Beams are a large chunk of the damage you do but it only happens when everyone hits all their notes in one set.