I just loved it! They changed the plot correctly, updating and making everything more modern. As a huge fan of the original series, i can say this remake is great. They altered slow parts to make everything more dynamic, discarding unnecessary scenes. They changed the background of some main characters for better ones and rescued the original manga backgrounds for others. The animation would be better in 2D, but if it is to suffer as we suffer in Saintia Shô with poor quality for lack of investment, 3D is the best option. However, the CGI is not bad at all. I still think that Shun's sex change TERRIBLE andunforgivable.

EDIT: After finishing the serie i reach this conclusion: The story adapted from the manga is very good, better than original anime.
But the original story created for this reimagination is terrible and full of script holes.

In the end, I still consider this a great reimagination of the classic. Cant wait for new episodes.