The survey results and my analysis have now been posted on the
hackerspaces.org wiki, as it seemed an appropriate location.
In future I will leave the survey creation to someone more skilled at it, as my inexperience with setting up the forms left the results quite messy, and cleanup has likely introduced some errors when tallying the free text entry portions.
However it has proven very enlightening. Some answers were more or less as anticipated, while others were very surprising. Overall, it is useful information. Next year I hope it can be refined further.
https://wiki.hackerspaces.org/2018_survey_of_expectations