I've been using daz studio since the late 2000s and I've tried a lot of different methods to reduce the amount of time I spend rummaging through the content browser. Last year, I finally hit on an idea that makes it easy to find stuff. This is what I did:
1. I made a folder on my desktop and called it 'Daz Catalog'.
2. I re-organized my content folder to roughly align with the categories daz uses on their shop (makes sense when you think about it).
3. I replicated this directory structure in my 'Daz Catalog' folder.
4. Every time I install new content, I make sure to grab some of the promo pictures and add them to the corresponding folder in my Daz Catalog.
Now instead of digging through my content browser and trying to remember products by name or author, I just look through my catalogue folder like I'm browsing my own version of the daz website. The key thing is that you're looking at galleries of content (like on the store), not lists of product names or the little thumbnails they use in smart content. It's just a lot faster, I find, even it takes extra steps to install things. I still use daz studio's built-in features, though:
1. I use smart content as a kind of playlists system. I'll just create a smart content category and dump a bunch of stuff into it that I want quick access to for a project.
2. I use tags and categories as a keyword search. If I need a 'thing', like a 'couch' or 'boots' or 'walking' pose, I'll create categories for it.
3. Stuff I use all the time-- especially scripts, shader, visibility and light presets, get added to the scripts drop-down as custom actions.
I know that sounds like a weird, low-tech solution. But the whole point of it was to make installed products as visible as possible as fast as possible. Folders with pictures in them turned out to be easier for me than smart content. Mostly because it's quicker to manage and organize and you can see more things at once.