How does this poll makes sense?
You can already choose what map you play. That place is called the lobby. If you dont care about balanced games (option 2 in the poll, an elo system is meant for balanced games), then the lobby is just the place to go. So we already have option 1 in the poll.
For option 2: There are some issues with the Elo system. The discussion about these issues is centred in Analyses of the ratings - Spotting the issues. There are even solution that will give you even more control over maps in ranked, while having a more meaningfull elo rating.