|I wanted to send a review to clarify some of my answers to the survey. For answers to #6 and #7, I selected "More GPs" because it was the best of the two answers available, since my motivations to both read a work and provide a longer, more detailed review have nothing to do with the length of the piece. More GPs don't really incentivize me, either, at least not nearly as much as some other things. For example, I'm more inclined to review something if it's in a genre I enjoy reading, if it's from a writer whose work I enjoy, or if it's from someone who took the time to request the review because they know the stuff I read and write and specifically want my feedback. Similarly, I'm more likely to include more a detailed review if a writer is looking for a specific kind of feedback rather than general impressions, and if they give me some idea of where they are in their process with the work (i.e. if it's an early draft they want to make sure is on the right track, or if it's a polished piece they want a final set of eyes on before sending off for publication). GPs alone are a very minor motivating factor when it comes to review requests.
I also mentioned in the survey that for items #9-#12, I selected a GP amount based on the assumption that it were the only thing that piqued my interest about a particular item. Practically speaking, I generally review anything people request assuming I have the time and that it's not a piece of writing that I feel unqualified to review (or is clearly something I don't like to read).
This survey seems geared toward finding out what makes an appealing review request, but I think it makes the assumption that "GPs" is the motivating factor for people considering review requests, or that there's a certain GP number that can be offered to entice a reviewer to review an item no matter what. To be honest - and maybe this is just me - I'm far more motivated by the content, a sense of what the author is looking for, and my general availability than I am by the number of GPs a review will net me.
For the purposes of achieving the best possible feedback to this survey, I would suggest maybe broadening some of those categories, or offering a write-in for people to explain their reasoning. For example, under "What would motivate you more to read/review a work," you could put the two existing answers (More GPs, and Less Length), along with some non-financial motivations like An Explanation of What Kind of Feedback is Desired, or even a None of the Above option or something along those lines. When doing surveys, I think it's generally a good idea to be over-inclusive (having more response options than you think you'll need) rather than under-inclusive, lest you end up with responses like mine where I'm selecting something because the survey requires me to, even though I don't necessarily agree with it. Situations like that may end up giving you biased feedback because it's not necessarily what's true... just what was chosen based on the limited options given.
Good luck with your survey! I admire the fact that you're actively trying to figure out how to make your work more appealing to reviewers.