3. Or for Westerners is the Filioque an absolute must? How do you then understand the monarchia of the Father if you say "the Spirit is begotten of the Father and the Son" eternally? Is that what you would maintain? If not why not just be willing to take it out?
Since the Son's Spiration of the Third Person of the Holy Spirit is derived from the Father, the monarchy of the Father is preserved. I would have no problem clarifying the Latin Creed to read, "We believe in the Holy Spirit, the Lord, the giver of life, who proceeds from the Father, through the Son."
But neither would I have a problem of returning to the older recitation of the Creed: "We believe in the Holy Spirit, the Lord, the giver of life, who proceeds from the Father." Since I attend a Byzantine Parish, that is how we recite the creed anyway.