I think some of your criticisms are unfair.
Sex Shop: It's not for players who have been in the game for a while. Beginners love it, old-timers don't get much out of it. That is the nature of almost any equipment shop, in any game. You can find patterns, but very quickly, it is not the place to go to power up your character. After all, if all you have to do is buy better gear without playing for it, power creep is all there is to the game.
Movie Trophies: The good and bad of movie trophies has been dealt with extensively elsewhere. I will say that after the bias has been removed from the Big Bang Awards, I think movie trophies are much improved over their initial implementation. I freely admit, both my studios are strong enough to hold movie trophies, so I like them. Gaining that strength has not been accidental, though - and the high studio fight penalties allow a lot of studios the opportunity to beat us if they want to.
Players Leaving: It may come as a surprise to you, but people leave the game all the time, for a variety of reasons. (Nor is this unique to Big Bang Empire.) These things tend to go in waves. A studio may be hit with a succession of retirements... and for the remaining members of that studio, the sky is falling, but that is just part of any social game. It is true that some servers are not gaining new players fast enough to compensate.. and on those servers, the view of the overall health of the game can be discouraging. But other servers are quite healthy... so where you are matters a lot to whether you see doom and gloom, or a bright competitive game.