I think something like this would be my proposal:
- I agree the Custom vs Quick Match option needs to be more visible.
- I also moved computer play to a dedicated page (the whole point here was to get more humans playing on common settings)
- The idea here is to minimize the number of necessary-feeling choices for the user to 2: board size and timing (and does so in fewer buttons than the grid)
- The board image is just decoration, but I like it to break up the text. You could eliminate it on mobile, to fit all the options without scrolling.
- All the other quick-match compatible options (Byo-Yomi preference / flexibility, handicaps, relative rank range) get pushed into “Preferences”. It’s a 1-click punishment for having strong opinions.