[Diggity]

I don’t agree that they would alter the universe to suit themselves simply because of how it would affect other sentient life.

Rather then alter this universe they might just rather create their own.

John

[Centurion2000]

I don’t agree that they would alter the universe to suit themselves simply because of how it would affect other sentient life.

Based on the observations (Humans), they most certainly would. Look around Earth. We're busy shaping this world and there are already structures that can be seen from orbit.

A galatic civilization will create or alter things on a galatic level.