Hi, i think that Sweetdate needs advanced compatibility system, i know there is a match system in the Sweetdate theme, but i sometimes think it doesn´t work all that well. The compatibility system i´m suggesting is something like Okcubid.com has, it´s absolutely amazing and allot of fun to use. You can answer as many questions as you like, the questions are individual so this isn´t tedious work. The results are displayed like in the picture i attached here.
Another cool feature (unless you know of a plugin that could do this), would be to allow the users to advertise for a date, that is, allow the users to create simple ads to go out for a coffee or the cinema or something, and it can be controlled by the admin so the ads would be live for a month or longer or the user can delete them.
I think these two features are absolutely must for a good dating website!