Case Opening Plugin Idea

I worked for around three hours on it and the UI is about 90% done. This is a really big system and takes some time to code. But I promise, this will be amazing.
For those who are interested, here's some extra information:

How do I earn cases?

• You earn cases by posting. I'm not sure yet how many posts you need for a case, but it will be around 20-40 posts for one case.
  
• By posting resources. (?)
  

Are we able to buy/sell cases?

• Yes, you will be able to buy and sell cases for credits. There will be a user marketplace where everyone decides which case they want to buy/sell. You also decide the price of it. (I'd post a screenshot, but I don't want to reveal too much information about it yet.)
  

Will there be different cases?

• Yes. Four to be exact.
  

How are we going to open cases?

• For every single case, you need a key. Keys can be obtained by buying them for credits.
  

What will be IN the cases?

• Upgrade Codes
  
• Username effects for a timeframe like a week. (?)
  
• Ability to embeed a picture on your profile. (?)
  
• Awards
  
• Credits
  
• ... and more
  

Anything else?

• There will be a graph on how many cases got opened within the last 7 days
  
• Global and user statistics.
  
• I also thought about adding a graph or something to show how the price of cases changes over weeks/months. This could be interesting.
  

* (?) = Not sure


I'm trying my best to get this system live as soon as possible. Keep in mind, that this is really big.
Oh and since I got already asked, this will be available for regular and upgraded members.