No much changes to the Gacha cards other than the buffs to Academy Lucifer and GAthena: http://www.puzzledragonx.com/en/news.asp?nid=400. It improves their leader skill but doesn't make them that much better by a lot. In particular, if GAthena's active skill usage was to boost attack instead of rcv, it will have been so much better.
This was what I wrote the previous time the event came around: http://simpleduelist.blogspot.sg/2015/04/puzzle-dragons-japans-pad-academy-rare.html. I don't think much has changed since then. I noticed I didn't write much about Academy Lucifer last time and he is hardly seen other than in the previous Japan Dark Izanami Cup Beta Ranking Dungeon where players used him or his normal dark counterpart as a sub to use the active skill nuke to gain faster clears. (Note that using nukes in the upcoming Cauchemar Cup Beta Ranking dungeon will reduce score)
Update:
Game8 card ratings: https://game8.jp/archives/24479
GameWith card ratings: http://パズドラ.gamewith.jp/article/show/12045
