Currently, there is a way to have a multi-line text input, but it's completely based around coding. While codemirror looks nice for coding, it's terrible if you're trying to write a paragraph.
I can see two ways to implement this:
1. Insert an option into the textbox (codemirror) syntax to use a textarea but no codemirror
2. Create a new problem input type. I'm leaning this way, just to avoid having to put special cases into the codemirror code.
Regardless of the dynamics, I think that the problem type should only be accepted by a custom graded problem response type.
I welcome any thoughts on the issue.