I think the questions of the next survey should be a superset of those on the last survey. Maybe not strictly, but it's too interesting to track year-on-year changes to remove questions unless it's really unquestionably obvious that they're superfluous.
Given that it's been a while since the last survey (http://lesswrong.com/lw/lhg/2014_survey_results/)
It's now time to open the floor to suggestions of improvements to the last survey. If you have a question you think should be on the survey (perhaps with reasons why, predictions as to the result, or other useful commentary about a survey question)
Alternatively questions that should not be included in the next survey, with similar reasons as to why...
survey is now up (2016-03-26) http://lesswrong.com/lw/nfk/lesswrong_2016_survey/