There will be basically all transformations in the game by Beta 2.0. Trust me, you are not the only one that wants more than one transformation level.
This version is Beta 1.0 though, so Beta 2.0 will not be out for quite awhile.
In the next version, Beta 1.1, there will be a few more attacks, such as the Renzoku Energy Dan for Vegeta, and the Earth-Like Spirit Bomb for Goku, and a few more.