Did the cross permanently affect the intra-trinitarian relationship? I have heard a religious definition of death as separation from God. This makes the death of Christ--God himself--a matter of incomprehensible existential crisis. Adding to this the imputation of sin on the Son, and the wrath of the Father poured out on him, it makes me wonder if this event does not affect the relationship of the members of the trinity in some permanent way. Is there any evidence of this in scripture?
Phillippians 2 says that because of Jesus' death, God the Father exalted Jesus. As 2:9 specifically says (and note the therefore):


  Therefore God exalted him to the highest place
      and gave him the name that is above every name, 
   that at the name of Jesus every knee should bow, 
      in heaven and on earth and under the earth, 


This theme is picked up by Athanasius, in De Incarnacione. His soteriology says our redemption was a gift that the Father gave the Son for his willingness to go through this separation. It's probably my favorite theory of how salvation works. The idea is that being God, both God the Father and God the Son already had everything. But out of an abundance of love, God the Father gave God the Son the opportunity to redeem that which was lost.