Greetings, Brother / Sister!
Strategy is this:
1. Check your rectification. Rectification is knowing minutes and hour of birth. It is important to know which planet is your Chart Ruler (CR) in reality. This is done by Saturn transits. Saturn transit on the main Chart Ruler - the main Ruler of the sign on the cusp of the 1st house - is the most delusion breaking transit. It can or can not be painful but always all delusions dissipate through being shown in their true nature, usually by the process known as trying your own medicine on your own self. So you will definitely recognize your CR with this analysis.
2. If you checked and your rectification is right, then you analyze in what exactly house is that company of Saturn+Sun in 15 Leo. The affairs of this house and the house with Capricorn on the cusp must be sublimated flat. By sublimation I mean extreme amount of energies of the chart (15 Leo being extreme amount of energy) being put into the positive affair of your own choice to the extent where they do not exist anymore. This affair might be and in most cases is profession. It might be work for Zeus and ToZ. It might be just profession of your dream, art, science, politics anything - depending on the specific of the house and your preference. Remember, every single house including 12, 4, 5, 7, whatever, can be totally and completely sublimated flat into profession - with gain or not, with acknowledgment or not (Mona Lisa was painted for several decades into the table and still it sublimated flat all chart and beyond). The more great dead, the more wide riverbed, the more powerful sublimation, the more stagnant energies gone. The only condition is that this affair should include both houses and be your Destiny Call, meaning it should unavoidably call you so that you can't resist such as you simply can't stand up from the table writing a novel / scientific book / doing exciting work for ToZ, and simply can't resist it is too desirable, more desirable than sleep, food, masturbation, money, dopamine, whatever lower need, you feel belonging to the greater thing and you are actually doing something greater. This is known as Destiny Call.
3. This is important. And this is particular important if this company of planets on 15 Leo is in any house of relationship, even 11. You must answer yourself (not here) is there karmic debt behind it. Leo 15 is a greatest symbol of karmic crops as well as some other degrees that are traditionally considered the worst. I see just too many signs throughout my investigation that the astrological chart, natal, predictive, any, is about sow and reap and about starting and receiving fruits of any magical works, including xian prayers in their worst forms such as child sacrifice in the "sow" phase and World Wars in the "reap" phase and related. 15 Leo is a "reap" phase. In some extremely rare cases this might be good crops, but these are rare cases. I wish it were your case. Yet please be honest with yourself. If you find that your fate shows the opposite, then do the following:
3.1. Think of your behavior. If you have this shit in the house of relationship and live with NPD or APD / DPD abuser or if the affairs of this house is somehow tend to be a crap, ask yourself, are there any of such traits in you yourself?
3.2. If not, then just do any and all cleansing possible on the affairs of this house. Learn from professionals how to harmlessly release from any abusive relationship if there is any in the affairs of that house. A lot people are incurably insane. Or if there is no but you feel that somehow the affairs of that house tend to be a crap, cleanse everything with the according affirmation. Use every Esbat for this (
see our calendars).
3.3. If you find NPD / APD traits in yourself you have to decide whether you want to give this world better experience with you. You have to cleanse not only your external karma i.e. your circumstances but your internal self as well from the one same evil. These things go together. Yes you might suffer for many lifetimes straight by now yet who knows what you did before these many lifetimes of suffering, and who you were to this world. If you abused someone in this life and remember it
try this. Cleanse anyway and if you really want to redeem something the ideas how to will come to you.
Sun+Saturn themselves show extreme honesty, responsibility, self-denial of pleasures, asceticism, noble self restriction for higher goal because high Saturn is always about self-restriction for the high goal. The highest octaves of this are real Gentlemanity, total restriction of evil traits and hard work on the self so it becomes purer, graceful and diamond. This gives best success in job where extreme self discipline is needed in comparison to other people. Greatest for any leadership of any kind - you have to see the house to tell the sphere. Saturn can give great gifts by itself when appeased. When connected to the Sun in Leo who knows what greatness it might achieve, since Sun is the fame. In the lower octave, with 15 Leo unsublimated it might give horrid defamation, slander and disastrous fall from the great position or just every misfortune including the topics of the self, paying debts in this regard, forced discipline and unwanted denial, deadly self-restriction and denial of primal needs (for example death of hunger, especially if in 8th), wrong health, especially if in 6th.
Critical degrees "that are worst degrees in the Zodiac" are extreme amounts of undirected unresolved energy. They must be resolved into the greatest position in this world. They need riverbed the most. Personal planets in them are extreme demand of direction, the craziest of all.
Your Neptune-Sun, Neptune-Saturn and Moon situations can be used in their high octaves to add more to extreme self-discipline for the sake of the others, sense of duty (higher Saturn) and desire to help. Neptune in Aquarius is the best thing to have for the genius (Neptunian/Uranian energies interconnected). If you wish Art sphere your Sun+Saturn+Neptune is the best thing for it if the houses tells the same.
Good luck with this, Sibling in Zeus!