You ask if God will have a new name at end time, but don't address or provide support that God will have a new name. Your title says new God instead of new name of God.
Your concern seems to be more about whether people will or won't accept this new name of God or accept God with this new name.
My personal opinion is that you would demand a miracle to believe in this new man/God. That unfortunately means that you are not ready to unify the world. End time predictions will not happen till you are ready to accept some ones Word that they are God.
When you get off the meds, reread your OP. It isn't presenting what you just explained to me.
As I said, needs work. I don't see a clear topic right now and I don't feel that what you presented in Message 5 would be a fruitful discussion either.