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In terms of your second point, this is a rationalization which seeks out to cover a common heresy that most people are unaware of, namely that of attributing to the Holy Virgin the status of being Co-Redemptrix, a belief found often in Roman Catholic teachings, but never found in proper Orthodox teachings. I do not see how we can ascribe to her these characteristics.
Again, I believe that it is absolutely essential that we are clear in what we state as being our beliefs. If there is a point of ambiguity, it must be cleared up. Hymns have been composed to relay the beliefs of the Church and have sought to avoid any ambiguities whatsoever. The songs that are being performed today can, at best, be said to be ambiguous; in truth, they contain teachings which are not of the Orthodox faith, and are thus distracting in their aim, which would be to enlighten the individual as to what the Church believes, and thereby bring the individual closer to God by allowing them to worship Him (and only Him) properly.
I realize that people will be averse to accepting this, as many, many Copts have been raised with this firmly embedded in them as being correct. It is important that we separate our emotions from subjects as this so that we may be able to examine them more objectively and try to preserve our Orthodoxy.