An interesting evolution to the original Caltrop Core system. EX gives tools and insights gained by the designer's own work with the original system. This makes it more honed. It fleshes out the d4 system by making every result meaningful without sidelining the highest result in your pool.
I'm looking forward to creating with this. And looking forward to what people will make with it too.
It's the macross missile massacre of SRDs.