There isn't much customization for input fields for open-ended questions in surveys. I noticed that if I add a "contact attribute", whatever I label it also appears in the input field. I thought that was odd because what if I didn't want users to see my label? There does not seem to be an option to hide it and there is no option to customize my input field to what I would like it to be. The only option is to ensure my contact attribute is a sufficient input field text as well.
This brings me to another issue with the contact attribute, if I use a contraction in a word in my contact attribute like "you've", then the input field text will say "you ve" because the key doesn't recognize an apostrophe.
Also descriptions for survey questions: There is no option in the editor to specify or change the size of the text for the descriptions. There is also no option to decide the padding of the description, so if it appears too close to the question itself, I can't change that.
I also noticed that the font color of the description for a regular input text for an open ended question and the description for a Contact Info question, are different. There is also no way that I have found to change/customize that.
These features may seem small on the surface but I believe they would improve the experience of creating surveys, as well as the end users.