Hi there¡
We almost have the same chart. I have the scorpio stellium, venus in libra and a capricorn ascendant, with pisces moon. Having a stellium in the 11th house with mars pluto and sun, could represent a stress in the friend relationship area, where you can experiment some issues with your near circle; that´s why viewing in my perspective you should be carefull with anger, and misunderstood problems that can end or damage long term relationships. In other hand, I find particular the mars pluto conjuntion wich took place specially in 1991 and 1993, i have it too and yes it is some hard aspect to deal with. Though not always is the same experience with everyone, it can describe some anger issues that have roots with violent child experiences or sexual abuse, Hope be wrong with you. It is all about energy, in this case is energy (mars) concetrated (pluto) that must be channeled in a good way like sports, etc.
Having the uranus neptune conjunction in the 1st house can represent a hazy filter of reality that eforts your own neptunian way to put face to reality.
Hope it help you.