Hi, thanks for sharing your feedback with us.
We understand that subfolders can be very useful. There’s a community post for this feature request here: Nested folders for organisation, maybe you can upvote it and follow any future updates we post there about that feature.
In the meantime, your approaches look good to me. You might also want to check out this post: Can't remember your shortcuts? A few solutions, it shares some useful tips and tricks for better organizing your snippets.