Greetings, Brother / Sister!
Interesting story with prominent [demanding sublimation] Western Hemisphere. Once I tried to learn something of really powerful women in history: those before whom all men, armies and empires were spread flat - Catherine the Great, Elisabeth I, Isabela I of Castile etc. Of course these were not women of today joke dumbocratic epoch, I only cared in my investigation for absolute monarchs with endless power over every life and death in the whole continent, no less. Of course this demanded insane Feminine Power of them because they ruled through insane magnetism. And guess what? They all had prominent Western Hemisphere, Pluto or Saturn in 7th - things no modern woman wants. Why? Saturn is insane tremendous energy of potential growth of personal power, in 7th case - power/growth through another. No one wants Pluto in 7th, yet Pluto in 7th belonged to the one of the most powerful women in the world known, Catherine the Great. Pluto was ruler of her 8th, she took power of her disposable kings she married one after another, then after they all died she went to absolute power over several countries and most part of the Eurasia with it. She sent armies across the world and they went and returned with the shields. Peoples of several countries called her Mother of People. Russia thrived under her.
Elisabeth - Saturn 7th, Isabella - stellium 7th, etc. You all know how they sublimated it. One - the sole ruler of whole British empire, i.e. the world. Other - re-conquerer of the Mediterranean from the islamics, a warlady.
I know more examples of people with insane feminine power (power through the important other) that changed the world with this power and who had astrological situation in 7th that demanded sublimation [Saturn and similar to yours].
As for men, successful sublimation is war. They are war lords. From birth to death.
I am really not sure how in today liberast cuckolded dumbocratic era people are going to sublimate these energies, because 7th is army. Liberast Europe refused her warrior energies, women refused their men's warriorhood, as a result Europe got what Saturn/stellium / aggravated 7th can give when it strays: endless abuse, violence and rape.
When these energies stray, people get "powerful important other" in a non-benevolent way.
7th aggravation or stellium is a good sign of murder or whatever type of abuse if let stray, and the best way to let it stray is to leave your Western Hemisphere's energies unused. This is exactly what left / liberastia / whole dumbocratic modern case teaches people to do - do not conquer the world, let instead the world conquer you and your country.
But with benevolent way this is a dream: endless armies, endless berserk manpower at your feet ready to do your orders and go to wars at your hand wave. Power through the army at your disposal. This is exact situation of Catherine II and Hitler and their greatest lesson to all leaders.
Important Other can be one's nation.
Sad unsublimated example is Nikolai II - he had stellium in 7th and had a karma of a warlord he had to deal with and work on, but he refused to listen to wise Rasputin who told him that he was lured into other people's plan. As a result he dispersed his enormous powers and had no them to do what really was needed to be done. He let the energies of his prominent 7th to overwhelm and stray against him, and his country - to stray into the revolution, ending up with all his family and millions of Russian people being murdered.
For spiritual practices and yogi Saturn in 7th might be either ascetic lonely life dedicated to service alone or Demon Lover, because Saturn is about deserts, earning things by bloody labor throughout lifetimes of most loyal service and work, spiritual growth and endless dedication. Saturn in relations' houses such as 5th and 7th reminds us that real love (including that to the self) has to be deserved. It does not and should not exist "out of the box" or for nothing. It is never free. Love is only for something, and this something has to be built sometimes through lifetimes of insane dedication and loyal work for the greater good.
Saturn in relations houses shows us the difference between
"love" for free - which is a love of a whore:
vs
Deserved love: