Anyway, didn't notice any major new stuff. The little bits of minor additions were interesting. Like noting that Shirakawa was in the literature club and that she gives Ryuusei a book in the first episode. Or that after giving the Rider Club permission to tour the school, he personally visits Aries. Aries sees through the ploy and confronts Hayami, who only responds with this great smug look on his face. He's the best principal, being hated by all the students everywhere.
What else was there? I noticed that when Gentarou was dead, he was standing in the Sanzu River while Kengo was on the shore. (There's a Sanzu River scene several times in Twin Spica as well).

I noticed that Ryuusei's school uniform has the Subarubu School logo on it. It has 6 dots to represent the six star cluster that the Japanese refer to them by (In the west they're referred to as the seven sisters, so there's some east/west disparity there). And of course the center kanji is the kanji for Subaruboshi.

And Luna noticed this in the background, which is pretty good. Looks like they recycled it from Go-Onger.
Edit:
Also, while I loved the Shooting Star music video, the Evolin' Storm video really sucks! I mean, singing in the rain while a fight goes on sounds pretty awesome. But having the video game thing and fighting CGI cubes was dumb. It just felt like wasted potential. Plus the song was repetitive to me too, so that didn't help.