A new sorting interface is currently in development which will enable users to sort by mission type, game, author, title, publish date, reviewer, score, number of players, island, weather - basically any field that appears in the review. Users will also be able to define how many results to show per page, and toggle ascending/descending order.
This will be a generic interface across depots, although the options available will be dependant on the content of the resource details, and naturally putting it together is not an easy job, especially given the time of year when RL is getting busier by the day. However, you can expect this feature (and a few other finishing details) to be in place in the depots very soon.