I don't know how feasible this would be, but it would be nice to be able to only see kde frameworks/plasma software only. Reproducible: Always
Why would it be nice? Does it look bad to have hundreds of free software available? The place to show KDE software is kde.org.
If someone wanted to have only kde software on his system to keep it as smooth and uniform and free from other libraries as possible, it would be nice, I think, because you wouldn't need to check with every promising software whether it's KDE or Gnome or other.