We need more and better filters and categories, that's all. No need to call for a general cleanout.
On top of my head half of the lots I've downloaded have download numbers in the double digits only, either because they cover niche themes or are just mediocre. The mediocre ones were great starting bases for venues I had in mind but couldn't really find a starting point. To lose the amazing ideas quarry that the gallery is now just to make the search for top rated items quicker is really too much to ask.
As for sims, many folks host modeling, bachelor or murder mystery challenges and sometimes basegame only is an actual requirement in those. The gallery is the most convenient way to share sims for such events. I'd be very angry if a quality control pruner culled half of my participants from the gallery and I'd have to fetch them from a dozen other hosting sites one by one. Another anecdote: Recently a friend made two families for me and messed up with the tray files, in effect cluttering my library with what looked like incomplete files (households couldn't be opened). And that was a normally computer-literate person.
