So, I like Frieza a lot. He's perhaps the best villain in DBZ. I didn't always like him, but after seeing his portrayal in Kai, followed by reading the manga, he grew on me a lot. If you ask me Frieza's treatment post Namek has been really bad and underwhelming both in and out of canon. So I'm glad to see that he'll get another chance to shine.
But what exactly is he supposed to do once he's revived? Goku in base should be able to beat Frieza without any difficulty. Gohan, Picollo, and 18 should be able to one shot him without effort. Hell, Krillin and Tien could probably kill him, though not without considerable difficulty.
Point is, Frieza is gonna have to do a hell of a lot more than simply come back to life if he plans to have any impact.
That said, I have high hopes for this movie. Hopefully we can get a more dramatic story than Battle of Gods provided since we'll have an antagonist who already has a history with several members of the main cast.