Genius Party won't speak to the mind of a regular anime fan! Oh no. It will let down a shoujo or josei fan big time, mecha fan also doesn't have a lot, action fan could just leave in the middle! It's mainly a playground for the directors to try their intersting ideas that they always wanted to bring to life. Their shorts are sure unique, but also weird at times! It is a try to be universal, but as I said, weird factor! :)
It doesnt't mean that the shorts suck. But they don't represent anime in general. I watched this movie in a hall in Germany, where I was trying to give a glimpse of anime to my boyfriend. Man, was that a bad idea! :D He found it: 'Hmm, interesting. What was that loooong dialog in that part about?! I left listening after 3 minutes...''
All in all, Genius Party is influential. You will think about some of the shorts for a long time probably, because it's art. But the movie is not a great watch in general.