That dip between the two flag-spawn islands is a bit killer on player movement.
And it looks possible to blind-fire sniper shots into spawns from (close to) each team's spawning area.
Looks easier to capture for B as it's a straight shot from spawns, and not so with A.
Although I don't fully recommend fixing up with map, as time could be spent in working on something with more potential, but (this sketch doesn't really offer any great solutions, but w/e):
