i think there's a high chance for BB to peak again to 40k-50k. it is far from doomed.
What do you mean by high chance? Personally I think there's an almost infinitesimally small chance of reaching 40k users. 50k happened once for a few weeks. 20k would be nice but we should really wait for 14k before we get really excited.
Just what exactly do you see happening in or out of the game to make you so confident that the user base could expand by almost 400%?