Having the ability to create questionnaires/surveys (e.g. multiple choice Q&A's) with different controls would be great. Currently I have to add HTML Literal for buttons etc. but your limited to how much functionality you can provide as posting the results back to K2 is really difficult with extensive JS. Having to click to edit each row first is not a good user experience either. Also using the click to edit approach, the controls tend to disappear when back in display mode and show the text value of the control selected.