^ Yeah, those will be the most challenging regions. There may be some benefit in those spots if its really done well, but they are likely to benefit more from localized delay fill speakers. Been a long time since I was at the Beacon, so not sure if they already employ anything like that or not. If not I wouldn't be surprised if something like that is part of this PA upgrade, even though its not beam-forming.
Upgrade may also include ambiance speakers hidden around the sides/back of those areas which can potentially help it sound more like the open room in those more acoustically cramped areas well back under the overhangs.