K-Member / Rack & Pinion Steering Suggestions

I've often wondered why these companies that build the aftermarket coil over/rack systems haven't changed the spindle/control arm design to that of the C5 or C6 Corvette. I'm pretty sure that's the design many of the big GM aftermarket suspension is designed after.

That would add some real function, in my mind. C5 spindles would mean an easy wheel speed sensor and options for ABS and/or traction control. I know you did one using the lugs, but this would be with a much easier and more precise.