You all will hate this comparison, but it's completely relevant - BC is currently renovating one side of Conte. It knocked out a full entrance and one of the atriums where you walk in and they're putting in a practice facility there. I was there last night.
Outside, it's a mess and confusing as hell to get in. The construction site is definitely not enclosed and it won't be complete during this season.
Inside, there's almost zero effect on concourse space. There's a giant construction wall covering where you'd enter from that previous entrance/atrium, but no impact other than annoyance and you can only enter/exit through one main entrance and multiple small side entrances.
From the sounds of it, XL ducked this one up bad and AngryHurleyBannerMania's pictures show what looks like an enormous fire hazard, much less complete incompetence.