First, an AMAZING map!! Entertaining theory also. Given that the event would have occurred at the very earliest stages of earth's formation it's going to take some doing to find evidence. BUT there was a man who postulated the land formations in Eastern WA State were formed not by erosion but by a massive flood. He was laughed out of the Geologic Society. Not until flight was possible did geologists realize he was correct. Now they know it was not just one flood but a series of floods.
The fluid nature of the plate movements and what happens to those large chunks as they either move down into the earth or fracture up forming new peaks is exposed as we find new ways to detect elements.
Things to think about.

I didn't know that . Thanks for the info.

It's possible, but from what I've read the collision wasn't a direct hit..

What would the bullet have been in your scenario?

You have to wind that map backwards in time 4-plus billion years. The land masses have floated around quite a bit to get where they are now. The notion that the Pacific Basin is the source of the Moon looks possible. The Hawaiian hot spot is the most prominent hot spot, but there are many more in the South Pacific. Their cause remains unknown or I've never heard it. The images of these volcano chains are intriguing.