Seriously, why?
My current rotor has only ever had issues when it was blocked up by a freakishly misshaped / sized ball. Other than that, it has been completely bullet-proof reliability wise, the batteries last forever and it feeds far faster than fields will allow you to shoot. What does this new rotor do that would persuade me to shell out nearly 2 1/2 - 3 times what I originally paid for my old one, especially when the old one still does all that I need it to?
Reload alert is an unneeded gimmick and while the variable capacity is a nice idea, it's only of benefit for a such a short period of time it is not worth the outrageous price.