(SPOILERS!) This episode was simply great. Why? That's 2 reasons. 01) The change of the Okabe we know to a completely sociable and grown person, with some responsabilities, studying in a college, and making "normal friends". This show how the universe was unexplored, and there will be more to come, and show us the "other side" of Okabe. 02) All the characters can be reformulated too, and can be really outstanding to think on a world line where the things of the main worldline have never happened, leaving the possibility of the start of a entire series. I, personally, wouldn't like to see this universe to change, becauseI love the characters how they are in the original series, but this can be a "front door" to the person that doesn't know about the series.

I love this episode, and I recommend to every fan of Steins;Gate to watch it and see "the other ending".