Feedback on Glint Survey User Interface

I don't know where this really belongs, because there isn't any obvious feedback location.  On the off chance someone has an in with the product team:

I just completed a Glint survey for my company, answering questions about another employee's performance on a 5-point scale, with the opportunity to add comments for each answer.  I absolutely hated the web interface.  Three big problems, and I don't know how much is standard for this survey tool and how much is correctable by the survey creator.  (1) There were 22 questions and you saw each one only after answering the previous one.  I know this is pretty standard for web surveys, and when each question is independent of the next it can make sense so that the user doesn't skip a question unintentionally or get lost, but for evaluating a complex thing like a person's performance I want to see all the questions and then go back and figure out what to say and where to say it.  I would much rather have a page with all questions at once. My solution was to answer each with a non-committal average and then go back and figure out my true answer for each. (2) Way too much white space.  A lot of scrolling up and down to read and re-read and answer.  At least I had a mouse.  If I was doing this with a touch pad or on a touch screen I would have skipped it entirely.  (3) The comment button for each question was below the 5-point scale.  If you hovered over #3 the comment button would show there, if you hovered over #4 the button would be there.  Fine.  Then you click on #4 and if you tried to click on the comment button you found that the survey had moved to the next question and your were commenting on the wrong question, so you had to delete your comment and scroll back up to the previous question where you wanted to comment.  UI fail.

Thanks for reading!