Whether DDB truly disappears or just gets renamed into something like Omnicom Global Buzzword Collective, the outcome feels the same. The brand as we knew it (the one that made "lemon so sweet" it became a metaphor for excellence) may be reaching the pantheon of famous names that once defined an industry - until we find some of Bernbach's DNA captured in a mosquito, at least.
Agencyland has long been thought of as a two-tier system. Over here, you have your 'networks,' typified by giant global holding companies such as WPP and its myriad sub-brands. And over there, you have 'independents' (the very best of which you'll find in our Indie Agency 100 list): shops with no links to those networks, owned by themselves or their founders and calling their own shots.