How good is he in the pro games, what map is he usually picked on, what role does he provide to the team, how is he compared to other sentinels? Only watched a few Chamber matches so I can't answer this on my own. And frankly, I'm terrible...

I understand not letting people choose their maps in competitive so that you can get everyone playing all the maps and to prevent people from only mastering a few maps. However, for unrated, there may be times where I want to try some map...