There are many aspects to this particular one there wolfscout.

Mental: Are you ensuring your partner has considered all the aspects of whatever particular type of play involved. Does it cause a trigger for the submissive to feel abused. Will it cause a trigger for the Dom to become abusive?

Physical: This goes to exercise and diet as well as safety. Is your partner taking care of them self with proper nutrition, and ensuring that they do the needs they are able to do within their own physical limitations to stay limber, to stay well circulated so that in a middle of a scene the Dom doesn't have a heart attach as well as the sub develop a chemical imbalance due to the change in body chemistry during a scene. Also safety in a scene. The activity that will be done, does the sub, or the Dom for that matter know all the safety precautions for the activity they are about to participate in?

We could discuss the financial health of a partner, but there is a financial Domination thread currently in flow I believe covers that.

What about the health of the lines of communication between partners. Are they open, are they clear. Do one or the other hide their feelings/thoughts?

Good subject wolfscout, I look forward to reading others inputs as well.