Perhaps it would be worth focusing on the VT version with settings optimized for full SoD for these templates. Otherwise, we have two options:
1st - get one-sided maps for one of the colors (red or blue), while the other will generate a normal map. The first player aggressively explores the wilderness in search of passages or takes the risk of starting in a one-sided map without the possibility of supporting supply lines, while the second player devours the central treasure piles and waits for the unfortunate opponent.
2nd - deliberately exclude them, not wanting to get the above-mentioned results....
There are already plenty of L-shaped templates declared for the SoD generator.......