First of all, just requests in general have no any form, and i tbh sure some people who have ideas even dont know they can just submit idea in form of requests. If more people will see requests they would know that exists and they can participate.
Secondly, as well some requests could give ideas to other people about how it could be done better.
There really very need transparency, at least just for posts with requests itself. Making staff voting transparent will just flame yet one round of accusations about staff-players relations so it probably not best idea, tho short resolution approved/denied would be already helpful. If its will also have reasons why it was denied, it will be just beautiful world.