I believe it’s a good idea. I certainly wouldn’t be opposed to it - personally, I think that it’s very important to be able to see and explore content available in a package when you buy it.
However, my concern is more toward those who create graphic content. As of right now, it is possible to extract visual assets from packaged builds. This mean that in its current form, legitimate artists could suffer theft at a much bigger rate than what was before.
I want to reiterate that I’m 100% for a way to preview assets/blueprints before buying. I just want to be sure that we don’t end up losing to illegal businesses on the way.