The Angel Moroni is not a symbol of His death, but a symbol of the restoration of the gospel.
I didn't say it was. My comments are in regards to whether symbols are acceptable, even if God says nothing about whether they should be used to "advertise." I am glad to see that you concede that such symbols may still acceptable for "advertising." So why then you make the exception for the cross. Simply pointing out that it is a symbol of death is not enough. Seem's your argument's ad hoc, having no real historical or revelatory basis.
The Christus depicts the nail marks in Christ's hands and feet, marks whose explicit purpose as explained by Christ is to advertise the sacrifice He made and to bear witness that He is God. See 3 Nephi 11:14-17. Seeing the prints on the resurrected Savior puts the sacrifice in context.
And? Why are you explaining the obvious?
But remember, I'm not minimizing the cross.
You are excluding it for use, when it comes to advertising.
The cross is a visual depiction. Let's replace that visual with something comparable of an auditory nature, such as
How about the word cross? The term is quite common in LDS scripture and hymns. Now what?
the sound of a man being tortured on a cross, gasping for breath and crying out. Would it be appropriate for a Church to record that sound and play it each time someone enters through the doors? Or to make it the official sound of the Church and play it constantly in the background during service?
Can cathartic value, as well as an appreciation of the atonement, come from such? Sure.
Carthage proves that the Prophet's testimony was sealed with his blood. That fact is sacred even though the physical act of him being murdered was not sacred.
Was the physical act of murdering Jesus sacred?
And Carthage itself did not kill him, it merely bears witness.
The same can be said for the cross. The cross didn't kill him, his crucifiers. So what is your point? Both serve as reminders of death, even though both figures' work (according to LDS doctrine) continues beyond the grave.