Subscribed and following, looking forward to your submission! You got a pretty solid outline for yourself, which definately helps. And since your asking for criticism:
"Not all dreams are realized, not all wishes are finished.
You play as Hope - one of those lost dreams in the world. Interact with the world around you, meet people who have lost their own hopes and dreams to fear, while trying to find out what sort of wish you were meant to be. "
From this blurb, my main worry is pretentiousness. More specificly, your idea can work, but only if your characters have some sort of grounding. Go too abstract, and they're plot devices rather than characters. If they're just ideas, then what makes them important? Why should I care about these not-actually-people? They're not real people.
I'm not saying it's a bad idea. Actually, it's a great idea. The catch is what dreams are being lost. "I want to be an astronaut" is a lost dream, but there's a good case for not being an astronaut (the required military experience, the ridiculous education requirements, etc.). Compare that to "I want everyone I love to be happy", or "I want to walk again", or even "I want my son's killer to be punished". You have an opportunity to flat-out declare character motivations, but what do you want to say about it? When, if ever, should we give up on dreams? Why do people give up? Where's the line between hard and impossible?
Wherever you go with this, I'm interested to experience your POV. Can't wait to play!