Thanks Frances - There is much speculation both inside and outside the LDS church on what God’s true nature is. I feel the target of your rejection of Mormon theology on deification exists in the differences in our semantics and culture . . .
James, it is not just a matter of semantics or culture, but one of reality vs. unreality. Semantics means that the same thing is perceived/understood but the words we use to describe it are different; e.g., we both perceive and understand a feline creature with blue eyes and a long tail; you man use the words, “Siamese cat”, I may use the words “blue-eyed feline” – the semantics are different but we agree on what we are perceiving. OTOH, if you think that feline is composed of feathers and chocolate, oregano and toothpaste, and I perceive it to be composed of skin and bones, muscle and fur, then either one of us is wrong in our perception or both of us are wrong.
Now regarding God, we are using – at least in part - the same or similar language, but our language expresses entirely different understandings and doctrines. The LDS teaching/speculation on the nature of God is one to which all orthodox Christianity rightly objects.
. . . .but not in our esteem of God as Omni-everything.
Well, you see, James, here is precisely an example of the above: When you “esteem God" as “Omni-everything”, the LDS Omni-everything only encompasses that which “Heavenly Father” has created out of already existing matter and over which He rules; it doesn’t encompass that which his father and his father before him and his father before created and rule – and which faithful LDS members will eventually come to create and rule. So, yes, Catholics “esteem” God, but for Who He truly IS (the One, Holy, Unique, Uncreated, Immutable God Who Has neither beginning nor end) not for what a misguided “prophet” and his successors have variously claimed Him to be.
Besides the biblical references to becoming gods (small g) and joint heirs of Christ that you and I share in common, Latter Day saints have only two other references to deification in canonized scripture, found in the Doctrine and Covenants. When read with a sympathetic eye and an open heart I do not feel they differ in substance to your description of theosis.
Actually, they do, given the true nature of Who God IS vs. the LDS version. For Catholicism (and Orthodoxy),
theosis draws one into an intimacy with the One Who IS; for LDS it is to attempt to gain identity with a god of vain imaginings who needed a god above him in order to be born, etc., etc. So the differences hardly lie in a mere difference in semantics.
May I one day share in some of God’s attributes? The gospel tells me it is so. Who am I to reject that idea? I embrace it, like you do. I will always be subservient to my Father in heaven and indebted to Christ His son. He is the vine, I am a branch. Without him I can do nothing, here or in eternity. Mormon’s are not God-Makers - but we believe Christ is our god-maker, if we dare follow him there. Do you disagree with anything I have described as my personal beliefs?
I agree they are your personal beliefs, James,

but you and I both know that, e.g., “Father in heaven” and “Christ His son” mean far different things to LDS than they do to Catholics and all orthodox Christians. Thus your acknowledgement of your being subservient is your Father in heaven does not negate that your progeny will be subservient to you when you fall into the line of “godhood”, and their progeny to them,
ad infinitum. And thus your indebtedness to Christ His son is one of indebtedness to an older brother, not to the Second Person of the Holy Trinity incarnate as Jesus Christ.
Interestingly, when asked about the often quoted Mormon axiom “As man is, God once was. As God is, man may become.” our current prophet remarked on national television, “We really don’t know very much about that.”
Perhaps Mr. Hinckley doesn’t, but orthodox Christians know enough from God’s Self-revelation in Scripture and most of all from the Incarnation of the Son of God to recognize the axiom as a lie of the first magnitude, echoing the temptation in the garden.
continued. . .