Don’t require states to uniformly respect limited liability granted in other states. Allow them to add limits, requirements, etc. let the different states explore the trade off.
Do you believe that states are the laboratories of democracy, and have rights, or do you believe that reducing the cost of regulatory compliance is a more important goal?
I take no position on this currently, but it's an important question that deserves a serious answer. Trading off the costs of "state experimentation" and "enforced regulatory conformity" is non-trivial to do.