If Christ is no longer on the cross how could one see the REAL Christ on it. There is no cross in Heaven .. Only the throne of David on which Christ sits..
Scripture tells us to try EVERY spirit (because we are all subject to satan's deception)
The tool we are given to test spiritual things to is scripture. If we see incidents or direct teachings that support a vision then we can hold it as truly from God..but if there is no support then we must assume it is not from God, but from our heart or satan.. Seeing the resurrection is the proof of Gods acceptance of the sacrifice and an assurance of our future resurrection. Christ defeated death, He had victory over it..why would he put himself back on it?
Acts 15:13-18 -- We are without God and without hope if Jesus is not seated on David's throne. Because then there was no resurrection
Heb 12:2Let us fix our eyes on Jesus, the author and perfecter of our faith, who for the joy set before him endured the cross, scorning its shame, and sat down at the right hand of the throne of God.
I guess what I am saying if someone tells me that they have seen the Father or Christ on the cross, or Mary etc.. I test that vision against the word of God and find no support from the infallible word of God on that and so I discount it, because I am interesting in worshipping the God of the bible, not one proceeding out of the mind of a man..
Ex20: 3“You shall have no other gods beforea me. 4“You shall not make for yourself an idol in the form of anything in heaven above or on the earth beneath or in the waters below. 5You shall not bow down to them or worship them; for I, the LORD your God, am a jealous God, punishing the children for the sin of the fathers to the third and fourth generation of those who hate me, 6but showing love to a thousand [generations] of those who love me and keep my commandments.
BTW the empty tomb is not the same as Christ on the cross because the tomb is empty :)