One thing is for certain; if you want a more sophisticated site than Dolphin, start building your own. I can't think of anything more complexed than Dolphin, and that is more likely the issue with Dolphin (if there is any). I realised that many of my members walks away not knowing why. So I ordered a little module at unregister.php, where my members has to answer a question of why they are leaving. It turns out, that one third are leaving because they feel Dolphin is too complicated to use. Seen see more from a dating site point of view, and in my opinion, Dolphin needs to focus more on interaction between people i.e. modules connecting people and make them interested in each other. Place the hand on your heart now... Why are you joining a dating site? Because you want to meet new people, maybe that special one you saw at the bus stop the other day. I am not saying that blogs, articles, store and so on are worthless to my users, it's just secondary. The primary goal is to enable people to interact together. This is where Dolphin needs to be tuned, if you ask me.

More focus on interaction between members, enhanced search possibility and even more focus on the payment part. I am not sure if you need games on your site, it depends, but what we all need is 10.000 members to start with. Then it would have been easier :-)