I've said this before and will now say it again. In my view the Component Browser in SketchUp 6 was much more useful than it has ever been since. I even stuck to using SU6 for many, many years after it had been superseded because of this.
The difference is that the old Component Browser was not connected to 3D Warehouse. This meant it was easy to find useful components to use in a project in contrast to how it is now when most models you find were never intended to be used as components. This is rather ironic since 3D Warehouse could and should be something positive, not a burden.
Don't get me wrong, I love how kids and hobby users can play in SketchUp and share their 2 million polygon cars or the first box they pushpulled or a 20 000 square m dream home. I did this myself for many, many years and it was great fun and a brilliant way to learn SketchUp! However there must be a way limit the search results only to usable components for 3D Warehouse to be a useful professional tool than gain architects and designers in our everyday work.
I suggest an option in the component browser to only show SketchUp's own components and those by certified Content Developers. I'm not asking for a checkbox you have to tick for each search or a keyword or something but a real persistent setting for the component browser.
I also suggest letting users make whole collections available offline. This was more or less a feature in SketchUp 6 as you could download installers that added SketchUp's extended component collections to your computer.
Currently loading each new page in the Component Browser is tediously slow even freezes SketchUp completely. This is extremely distracting and stops any flow you might find yourself in. Even if the content would be loaded as a separate thread and not freeze up SketchUp the interruption of waiting is totally unnecessary and causes problems for those with an unstable Internet connection.