I got a one month plan last month because I wanted to see the movie "The Lunchbox"which wasn't available anywhere else.
From that perspective Hotstar was good. But if you look at the selection of movies, mostly are the movies which failed at the box office. So overall not a good choice unless you are a GOT fan or any such series that you absolutely have to see.
For other series you can wait for a day then the content is available without the premium plan.