FX Banks 1&2 same?

Hi,

What’s the purpose of having two banks (FX1 and FX2) with identical effects on both banks? Am I missing something here? or is Denon DJ going to add more effects to differentiate FX1 and FX2 in a future update. I’m new to these type of controllers, so bare with me.

Thanks!

layering?

Also, they can add more down the road; they have added 2 to the X1800 since it was first released.