I’m not able to answer all the questions you pose, but I use public polls quarterly for content voting. I finished the Spring Public Poll in May and set a two-year scheduled of content. I’m really pleased with the long-term view I was able to get from the poll.
I have a public poll upcoming in September that has been drafted to shape a one-year round of content, but it might end up large enough to be a two-year schedule.
Each quarterly public poll is a vote for different content (winter: sample cards, spring: topical posts summer: sample folios, autumn: stretch goals). I mention this; because you have several genres of review, so you could break up the type of review into quarterly or monthly polls, with enough choices to prioritize based on votes, and set a longer period of content and shape a schedule for upcoming months. I do not know how your responses accumulate, but you can certainly judge whether it helps or hurts your audience attention and engagement to have frequent polls.
I feel it helps me show my audience there is a commitment to long-term goals and ongoing content creation. I think they can see the votes become prioritized efforts to create content with highest votes. In more than one poll result, I’ve been able to say, “I wanted to do this, but your votes indicated you want this.” So, although in a few cases I’ve put off my own creative content and focused on the audience votes, I’m always doing something I put on the poll. I put the options on the polls, so it’s always something I have a brainstorm ahead of putting it on the poll listings.
Fair notice, I did not vote in your poll. It doesn’t appeal. But, I am going to watch your review of Fire & Ice. I like that movie.