Singing and dancing:
They're decent singers, but only a couple of the new Senshi can dance o_0

Important Actors:

Fumina Hara as the first new Moon since Anza.

Takagi Nao as the first new Uranus since Kimura Sanae.  A very popular Uranus

Nishina Yuri returns as Beryl.

The first Amazon Trio.  Hikari Ono returns in the role as Hawk's Eye (former Starlights, Loof Merrow, Bloody Dracul Vampiru, and Prince Demand (all in the Sera Myu).  She also does other stuff like her self produced Nazo no Punk Lady and Ninja Yell

Ichige Midori is Fish's Eye, she also plays a role in the HxH musical

Mochizuki Yuuta plays King Endymion.  Also plays Tuxedo mask and Dracul in other myu.  He also was Kamen Rider J and Tyrano Ranger in Zyurangers.  He's also one of the F4 in Hana Yori Dango

Bad:
A lot of aspects are put in direct contrast with Anza's musicals, distracting from the intersting Stars/SMSS mix

Good:
The songs are good and there a couple cute moments.  I like the jokes.

Bonus: