What is NatAmi you ask, not so long ago before the Vampire 4SA was a thing there was NatAmi. NatAmi is a project by Thomas Hirsch which aimed to create the next step in evolution for AGA Amiga's. It wouldn't be 100% compatible, but it's aim would be to update the Amiga 68k platform and take it forward. It would be faster and add new features which later on became SAGA. A prototype was shown at MeKa 2008. However the project fell apart, but much of the work that was done went on to become the Vampire 4SA which I proudly own today.

https://www.reviewmylife.co.uk/blog/2011/03/23/natami-native-amiga-interview/