Link: http://g4tv.com/xplay/reviews/1946/Sins-of-a-Solar-Empire-Entrenchment-Review.html
“Entrenchment does add a few other, minor changes, like a new “quick start” mode that drops you in there with a colonized planet and a few ships at your disposal, and some re-organized elements in the tech tree. But, really this “micro-expansion” is just about adding those few new defensive abilities, abilities that really do spice up the game. Even if you are a purely offensive player and don’t see yourself ever making use of them, if you get this expansion your opponents (AI or otherwise) most certainly will, thereby making your task more challenging and, hopefully, more fun. For $10, serious fans of the original who are still playing regularly, or those who are itching to pick it up again, won’t want to miss this”