Mundanes in a world of magic.
Well... Okay, not just mundanes. Minor magical/faerie/infernal/divine traditions in a world of magic. For instance, Hermetic magic short-cuts so much interaction. I added a specific little story in Hibernia about a foreign magus who couldn’t work out why all the animals in every regio he went to went crazy towards him. It was because he used magic to step through the veil rather than paying attention to the proper rules and entering the regio the correct way.
A game where working with magic rather than solving problems through magic, that appeals to me. We can still tell great stories in the world without Parma Magica and without every character commanding every form and technique.
There’s such a wealth of hedge traditions defined in the game as it stands, that I would happily play ten years with those and never touch a magus in that time.
Without The Order’s restrictions, players and characters are free to do as they will without endless discussions on The Code.
So yeah, Mythic Europe... But without the Order of Hermes.
You’d still provide a treatment for The Order, but they would very much be the other.
As an aside... I thought hard about that laboratory adventures book. I think I timed out on submitting ideas for it. But if there’s anyone out there that remembers what they had wanted to do with it, let me know. Let’s see if we can resurrect the missing book...