We have stayed BWI CL deluxe with 5 people. I mean, it's busy. You have to be an organized group. The lounge is good because people can get up and get ready then leave the room and have breakfast.
As to worthwhile, that is very subjective. The breakfast and coffee alone might make it worth it for your family. The evening apps would definitely add to the value, but if you can only make breakfast, with 6 people in the room, it would probably be worth it. Maybe you'll make it back a day or two for wine and apps.