Your modifications seem to be headed in the right direction! I do have a couple questions:
- How are you planning to significantly change the out-of-game menus and user interface?
- What types of obstacles and challenges are you planning on adding? Will these be new, or using existing assets in a creative way?
- What types of interesting and fun challenges will you include in the new level(s) that you create?
I'm looking forward to seeing your final submission!