The problem with a torus-form habitat is that it fits poorly onto a typical rocket. You can only fit a (long) tube onto a rocket. No, but a cable fits nicely i

The problem with a torus-form habitat is that it fits poorly onto a typical rocket. You can only fit a (long) tube onto a rocket. No, but a cable fits nicely into a rocket. Dividing up the ship into two pods would get you a nice long radius to minimize Coriolis effects. If one pod contains a nuclear reactor, for which you need separation from the crew compartment, then it's quite convenient.