this movie is pretty great.
the ZAP Spacey ship and crew look a lot better than in their tv show, which is what a decent budget will do for you. and while you get to see lots of Ultras and lots of Ultra Monsters, they tend to amount to cameos rather than actual appearances. which is sad.
Kamen Rider Double in much the same way. sorta.
this mega monster is much better realized than the ones in the last two movies, as it's not just a cg creation.
all in all, out of the last three Ultra movies this one is by far the most fun. trying to tell the difference between the various Ultras we know and love and have rarely seen (I know Jonias was there, but I don't remember seeing him) is a lot of fun. same with the monsters, who do suffer from the revived monster syndrome- pale shadows of their original powerful selves.
I have no idea who they will have Zero fight, as he's SO powerful. it'll be fun to find out!