I've got some rough sketches done for a new lathe with live tooling, but I need to get my big mill running first, as I'll need that to machine parts.

The biggest issue I still can't make a decision over is the spindle.
I'd like to maintain a reasonable speed, but retain good holding torque for machining.
Oversizing the spindle servo is one option, but it gets expensive, and needs quite a hefty power supply.
Adding a gearbox introduces backlash, unless you have a very large budget for a suitably sized backlash free gearbox.
Or you add a second motor you can engage/disengage, which adds it's own set of problems.

It's interesting to see that SwissMak uses a second motor. I wonder how they're engaging/disengaging drive...
(and it's worth mention that's not a Swiss lathe. It's simply a lathe with a moving headstock)