What would you prefer us to call it? "Sixaxis Rumble"? "Rumbleaxis"? "ShockAxis" is a silly name, but it flows off the tongue better than the other two names I mentioned for topics like this.
I already have two controllers and that's all I really need, but I'd buy the new one... if they fixed the triggers and swapped the location of the left stick and d-pad. Since this will never happen, I won't be buying another PS3 controller anytime soon.