Baptism of "Desire" does not remit Original Sin. One of the graces of the Sacrament of Baptism is the remission of Original Sin. No soul in Heaven is stained with Sin, Original or actual. If Baptism of Desire is not the real Sacrament as BODers concede, then what it is?
The Sacrament of Baptism provides the mark placed upon the soul which actually give it a share in the Divine nature and royal priesthood of Christ Our Lord. Baptism makes us part of the Church, of the mystical Body of Christ. The desire for Baptism simply cannot provide this. See the infallible teaching below:
Pope Pius XII
By the waters of Baptism, by the general title of Christian they are made members of the Mystical Body of Christ, the priest, and by the "character" as it were, imprinted upon their souls, they are assigned to divine worship; and so they participate in the priesthood of Christ himself, according to their condition...
There is only ONE Baptism for the remission of sins. The Church solemnly condemns those who turn water into a metaphor.
Pope Pius IX
Let us hold most firmly that our Catholic doctrine, there is ONE GOD, ONE FAITH, ONE BAPTISM. To try and inquire further in unlawful.