I don't feel like the current search filters for Sims 4 custom content is specific enough. More categories should be added, like being able to choose between maxis match and alpha cc and choose which age group you're looking for. Perhaps even a way to have multiple filters at a time to narrow the search even more would be a nice edition.
As part of the new website launch, we're planning to add tagging and the ability to search by categories. We will look into adding more categories if there's enough demand for it :]