Hey, compared to the 700 series "platypus" (so called because their front ends look like the snout/bill of a platypus) units, that concrete wall is a modern work of art!
I prefer the look of the old zero series (the original) trainsets myself. But don't take my word for it, as I'm a historian with a terminal case of nostalga. At least the E3 trainsets (Akita "Komachi" and Yamagata "Tsubasa" Shinkansen trainsets) resemble the French TGV and Eurostar trains to some degree.
(For those of you who have no idea of what the various Shinkansen trainsets look like, have a peek at the link below.
http://www.h2.dion.ne.jp/~dajf/byunbyun/types.htm
Enjoy!)
As for the Yamanashi Maglev. I haven't heard too much about it since I left Japan. I remember that in late spring/early summer of 2000, they got the trainsets up to 500 or 555 km/hr and just before I left in August of 2000, they were about to start working on the problem of buffeting and other such things when the trains passed each other in tunnels.
(Again, for those of you who don't know about the Yamanashi Maglev, here's a link to the Aichi Prefecture (where the test track is located) website about the maglev...
http://www.pref.aichi.jp/kotsu/rinia/4_e.html
enjoy shite kudasai.)