I have read that a tight connunction (probably a conjunction less than 5 degrees) binds the two energies together into one. I have jupiter and saturn within 2 degrees of each other in Libra and Sun and Mercury also within 1 degree of each other at 29 gem and 1 can.
When such a conjunction opposes another point on the natal chart, depending on the houses and other factors of the chart, it may cause stress or it could generate a focal point for the conjunction to direct its energy to.
Neptune realates to the realm of the imagination, Saturn is the ruler of what is real, this strange combination of conflicting energies releases its conflict through your MC in Aries, which in turn forms a powerful drive to make what you want attainable, but you may need to learn to restrict yourself in your desires, but Saturn helps you do that, if you work with saturn it helps you, if you fight Saturn, it just pushes more reality in your way.
Sun and Mars is a fiery combination that is only enhanced in Leo, ruled by the sun. your MC Aries rules Mars, and you have the ability to lead because of it. Since the SUn and mars opposes your north node it conjuncts your south node, and these two points deal with business.
What this is telling me, is tha you have a strong well-grounded intuition in regards to how you lead others in business and long-term goals. You are more than qualified to be a manager or a team leader of a group of anysize, but the more rounded the better. You have the ability to change how people think of eachother in a working environment, use it wisely.