Build VR program

I am a researcher who has been working to develop a Virtual Reality Learning Environment that teaches paragraph structure. I have been employing undergraduate computer science students to do the programming thus far, but they have reached the limits of their expertise. We are using Unity 3D. I require someone to pick up where they have left off to help create additional functions to an existing program. Namely, I want to refine the following features to the program: -simplify button assignments (would like a primarily one-button functionality) And I would like to add the following features to the program: -A method of text input ("typing" sentences into the program) -Interface for coloring essays -Ability for users to upload their own essays to color sentence-by-sentence and also paragraph-by-paragraph -In-program assessment device that tells user if they colored the in-program paragraphs/essays correctly