You don't actually mean "showstopper." The term "showstopper" comes from the days of vaudeville. There would be a series of different acts, one following another on the stage. The entire series comprised the vaudeville "show" for the night.
But if one particular act was so outstanding that the audience demanded it be repeated over and over for the entire night, that outstanding act was the "showstopper." Being the showstopper was a good thing, highly desirable. A showstopper could go solo.
What you really mean is "deal breaker."
Yes, #2 would be a dealbreaker, if it had not occurred.
But if by "primary" we mean "first," the answer might lie in Colossians 1:
He is the image of the invisible God, the firstborn over all creation.
For everything was created by Him, in heaven and on earth,
the visible and the invisible,
whether thrones or dominions or rulers or authorities—
all things have been created through Him and for Him.
He is before all things, and by Him all things hold together.
The first purpose of Christ was to create the universe, without which act there would be nothing to save.