I was in the Flagship Lounge for a few hours yesterday and I really rather liked it. I've been to all five FLs and from a space standpoint it's probably my favourite in the system. The staff all seemed really friendly too.
I didn't really have any of the food but enjoyed playing with the Bartesian. I did think it was a bit odd that the feature station was holiday themed! I can't remember if it was turkey thinking back but it was definitely a few weeks late!
I hadn't been through DFW in a while and after sampling the zoo that was the Centurion Lounge I felt like an idiot for not going straight to the FL.