Recently I've been experimenting with this symmetrical tuning, similar to the "Cittern 2" so I ended up calling it it "Cittern 3" tuning. From low to high is :
F# C# F# C# F# C# F# . It's very logical and I found out that's also great to visualize scales and arpeggios ...
You can find tabs and articles at AXE Magazine:
Symmetrical Tuning - AXE Magazine