Nothing coherent can be come up with for S-size; there's absolutely no room there. Therefore, M-size, but with a more contact-oriented connection structure.
It is so frustrating to dig through unfamiliar software without a manual and without the author on hand... the last time I messed around with text editors was about 7 years ago... but I think I've figured out where everything goes.
So, here is the Dualization v1.0 template
Unpack the archive contents into the Heroes folder and select _mirDualization from the templates list (it seems Wizard set name restrictions there; you can't just name them whatever).
The template scheme is a cross of 5 zones: the starting respawn in the center, with secondary sites at the corners, looped in pairs.
I drew it by eye and haven't tested it much, so it's recommended to check and perhaps tweak the parameters. Specifically:
1) Guard strength between planes. Currently 6000.
2) Amount of gold and resources (lower range density). Currently 12 everywhere.
3) Monster strength. Currently weak at the respawn and avg at secondary sites.
4) And what type of roads to specify in the rules to achieve the optimal level of connectivity. I suggest testing medium ones first, then proceed based on the results.
The upper value limit is 9000, meaning Dragon Utopia clues aren't generated. Are they needed?
I used the latest version of Hryulez, 1.32 (in case it's critical...)