Except that polls don’t expose who voted what, just the total number of votes and percentages for each option. That’s where purpose-built tools such as Doodle and MeetUp come in. Polls aren’t a calendaring tool, they’re a quick finger-in-the-air to sample opinion.
Or we can simply update our welcome message? Polls are one of the few shortcodes which users will ever need to pick up (unless you also use spoilers) and their basic syntax is a markdown list. It takes seconds to add a quick primer to the welcome message, which already stores all of the other reference material for new users.
From what I can see above, the responses have said the opposite, if you want to submit a design or PR to implement this in a way which makes sense it will be considered. If you can’t devise an approach for this either, then you can at least acknowledge the challenge the team faces. “Fix it, I don’t like it” helps nobody.