There is no such thing as acceptance or rejection by the mind of the Supersoul. Our mind is in the present material existence a nonsense. It's business is simply to accept or reject. The Supersoul has no separate mind like that, but He has got mind also, and whatever He thinks in His mind, also, that is a fact. There is no question of accepting or rejecting. In Sanskrit language it is called Satya Sankalpa. And our mind is Vikalpa. The mind, body and the Supersoul is the same Absolute truth, there is no distinction between Them. This is in answer to your question, "is the 'conscience' the symptom of the Supersoul?"
Your question, "could we use alchemy to make gold for Krishna's altar?" but---I could not follow what you mean by using alchemy for Krishna's altar, but if you can make Krishna's sitting place made of gold, either by alchemy or by purchasing gold, it will be a grand success. But I do not advise you take advantage of alchemy for making gold, it it is not certain. We should not waste our time on that which is not very sure. If you can manufacture gold, then we can very soon spread our Krishna Consciousness, but I think Krishna will not give us that opportunity, because as soon as we get large quantity of gold, we forget Krishna. That nature is incumbent in our character.
Yes, those twelve symptoms of the spiritual soul are correct, except for "all-knowing". All-knowing it cannot be, but full of knowledge.
The scientists' anti-matter is different from the anti-matter conception which I discussed in my book, Easy Journey to Other Planets. I think I have explained this by correspondence with Dr. Welk.
Regarding your questions, "how the simpler faith of a real Christian, that is not so advanced in knowledge of the Supreme Person, differs in ecstasy or the end result of God-consciousness," (1) and persons "a devotee who has experienced some ecstasy in the company of Christians suggests that if there be no quantitative or qualitative difference between the two forms of Kirtan, then the simpler philosophy of Christianity has the advantage, and that our philosophy is for the intelligent class of men, true, but of what advantage is such intelligence if the end is the same?" (2) There is no ecstasy in such simple faith; there cannot be any ecstasy. The Christian faith as it is now exhibited, they have simply a faint idea of God as order-supplier. Certainly God is the Origin, Source of all supplies, and either God-conscious persons or demons, everybody is enjoying the general supplies made by God. It is just like a rich father maintains all kinds of children; some of them may be a highly qualified, some of them are rascals. The father does not mind whether a child is rascal or qualified, but out of his love for all of them he supplies the essentials for the children. Out of such many children, if someone of them feels grateful to the father, and thus develops love for the father, as it is expected, his position is better than the other children. And the father is also endeared to such a devoted child. Similarly, God is equal to everyone, but one who developed love of Godhead, and has practically employed oneself in the service of the Lord, he is in real touch and favor of the Lord. That is the difference. (2) We want ecstasy, it does not matter one feels it in Christian church or in other church. But, one who feels ecstasy in Krishna Consciousness or God-consciousness, he finishes his ecstasy in material enjoyment--that is the test. One cannot say he is feeling enjoyment--that is the test. One cannot say he is feeling ecstasy in some company, and at the same time, he is trying to take advantage of material sense gratification. This is not possible. This ecstasy doesn't depend on the intelligence or non-intelligence; it is spontaneous response, without any cause. If one is fortunate to have such ecstasy, it is to be understood that his life is successful. We do not advocate any sectarian religion. We are concerned to invoke our dormant love for God. Any method that helps us in reaching such platform is welcome, but we find practically that by chanting Hare Krishna, many students have come to the platform of ecstasy. But we have hardly found anyone to come to that stage simply by following the religious rituals; that is the difference. So, Krishna Consciousness is meant for the most intelligent class of men.
Your question, "if in the Vaikunthas ecstatic love between Lord Narayan and His devotees and Lord Krishna Consciousness and His devotees on Krishna Loka is qualitatively the same, then what is the advantage of following the path of Krishna Consciousness, whose philosophy austerity is difficult to understand?" Krishna Consciousness philosophy includes the whole Vaisnava philosophy. When we speak Krishna, the very Word means, Rama, Nrsimha, Varaha, and all other similar expansions and incarnations. So Krishna Consciousness includes Vaikuntha consciousness, but Vaikuntha consciousness does not include Krishna Consciousness. Those who are strictly following the rules and regulations of Vaishnava activities, they are promoted to Vaikuntha lokas. But those who have developed a spontaneous love for Krishna, they are promoted to the Krishna Loka. Therefore, although Krishna Consciousness includes Vaikuntha consciousness, pure Krishna Consciousness is spontaneous love for Krishna without any regulative principles. The idea can be explained that a young boy or a young girl are spontaneously attracted, without following any regulative principles previously. When one develops such spontaneous love for God, that is called pure Krishna Consciousness. In our conditioned life, we have forgotten our relationship with God, but by regulative principles, we can make alert the inert activities. Just like a rheumatic crippled man is gradually elevated by some bodily exercises. Similarly, the regulative principles are to make us habituated to our dormant service attitude, but when that is mature, it becomes spontaneous, and that is pure Krishna Consciousness. And such highly elevated Consciousness makes one eligible to enter into the Krishna Loka. The living example for much spontaneous love are exhibited by the Gopies and inhabitants of Vrindaban. We can learn this from Srimad Bhagavatam how much they love Krishna spontaneously.