play some skirmish, then 8xm12a will seem like a good, balanced template :D :D :D
Added after 4 hours 42 minutes
Mirror templates are probably hard for most newbies to understand, and whoever doesn't like 8xm12a can skip it, no one is forcing them to play it.
On h3dm1 it's more complicated, but in principle you can also figure it out and it's intuitively clear which zone on the opponent's plane you've entered.
But figuring out all the intricacies of the 8xm12 zones with an abundance of one-way passages, a bunch of roads through a bunch of zones, half (if not more) of which don't even have towns, with the presence of four-way passages and unrealistically long roads — that's scarier for me than electrodynamics was at university.
Although that's my opinion, and of course it doesn't claim to be authoritative
Added after 8 minutes
Also, I wanted to clarify one more point.
By mutual agreement, is it possible to extend the OH?