Hi! I thought your post was very interesting, because I had been looking for the very same thing. I was afraid of my daughter being overcome with workbooks and busywork. I wanted her to be able to find the truth of the Bible and how it relates to the world for herself, not just rehash someone else's thoughts. I think I found what I was looking for in the Charlotte Mason method and Ambleside Online (AO). AO is not just a booklist; you have to study Charlotte Mason's philosophies to implement it correctly. It is a full, rich curriculum based on the Bible and great literature (not to mention challenging). It includes the full span of life -- things we continue to study as adults -- foreign language, music, art, nature, etc. I believe the method inspires children to learn and think and create for themselves.
Just my opinion, for what it's worth. This is only my 2nd year of hs coming up, and I know there is a lot out there that I haven't looked into yet. I am really interested to see what kind of input some of the more experienced parents might have for you.
Take care, and I hope you find what you're looking for.
Suzanne.