Lets remember the creation of demolition?
The wave of leavers were massive back then, many new hopes were back then. If you would analyse the reasons for people leaving back then and now, they mostly match. Its harsh realisation that nothing have changed, how the people behave, trying to get something done etc..
Ambrosia havent done great indeed, many wrong decisions have left community to struggle in a fight to take top ranks, however the global fps games have changed, and as for "gaming community with 1.6 as the base" its not that easy to hold people around.
But if even ambrosia is not done right, it doesnt mean that new trio of shark, roni and sami will be answer on all your questions - why ambrosia is not top community any more..
Look on the leavers tab, and look who are creating hydra now, they are just another ambrosian ppl, not a new, fresh ppl from outside. If you decide to leave ambrosia to join hydra, you actually will not leave ambrosia, you will be in the same place, just different owners of forums and under new slogan..
Good luck with your decisions, but ambrosia still is just round here not somewhere else..