The SN gets short shrift, in my opinion. In synastry, people seem to think it is bad if a partners planets conjunct one’s SN. I disagree. The SN is warm comfy slippers that one has worn out, such that they fit just right, albeit look a bit ratty. The north Node is new brown leather loafers, shined just right, with a proper penny put in the slot. The NN is aspirational. Yes, we need to put on our proper loafers and walk out the dorr. However, when we get home, we put on our fluffy slippers.
In synastry, if a person puts personal planets on your SN, you will feel very familiar with him. This is a lovely feeling, such as one has with one’s childhood best friend. As one ages, one does not find this sweetness and innocence one had so readily as a child. If one does, it is rare and would be Moon trine Moon or Moon conjunct Moon. It may be the Child Asteroid conjunct another person’s Moon. At any rate, it is rare. 
All this to say, that one must not overlook the SN. With that said, let’s look at planets conjunct the SN in the natal.
Planets Conjunct the SN in the Natal
Sun— This person will have a natural self confidence. Likely, he will not have an ego crisis or identity issues. Lucky him!
Moon–This native will have an easy access to his own emotions. He will be in touch with his own heart. Lucky him!
Mercury–This native will have an easy time communicating this thoughts. He will be a natural.
Venus–This native will be able to love easily. Love vibes may radiate from him
Mars–This native will find it rather easy to set goals and go after them. He may be a teacher of assertiveness training. If he is not, he should be because it will come easily to him.
Saturn–This native will be well disciplined in the manner of a Capricorn. He can be counted on to be mature and get the job done, whatever it takes.
Jupiter–This native will be positive. He will shine joy and optimism wherever he goes. We could name him Little Mr Sunshine
Uranus–This native will be out of the box. Don’t expect him to conform but he will be weird in a wonderful way, which others could only wish they could emulate
Pluto–This native will have the charisma and moves of James Bond. Don’t cross him but he will be loyal, if you are, too. Pluto rocks in this word of plastic bananas and rock and roll.
Chiron–This native will understand pain. If you are hurting, he will not push you away with a platitude. He knows the depths of pain and he can help another who is swimming, therein.
Ami dear ,in synastry if someone’s hard planet like chiron sits next to your south node,will it still be comfortable?
You will have learned lessons of pain, so it will not be as bad as those who have to learn it again. You will be wise with this subject of pain
What if someone else’s chiron touch your south node?
He would bring pain to you but it would not be a life theme. You may be able to work it out in your relationship such that it does not dominate and poison it which a Chiron conj the NN would do imo
Any thoughts on natal juno conjunct south node? Always wondered about that one! Thanks 🙂
you are naturally a devoted and loyal person who has the best qualities of a loyal spouse