Nintendo Switch Prototype Game Cartridge Case

Hi, I'm a new user and I've been working on a small line of game case for the Switch and I could use some gamer feedback.
If any of you have a little free time would you mind taking a look at the first design and giving me your opinion?

I would like to know two things:

1. What are your thoughts on the design.
2. What would you change, if anything.

I've posted a short overview of this case on Youtube and here is the link

Thanks in advance