Ideas and suggestions.

On h3dm1 - when exiting to the treasure.

In this specific example, we can see that it will perform worse than what we have now. As a rule, on h3dm1, players enter the treasure area quite early (114-115-116), and usually, the surrender pushes opponents to go in the same directions. At the same time, both opponents sometimes reach the opponent's plane by turn 117 and still don't intersect. Accordingly, simply placing an Outpost on 117, or for reliability, on 116, gives a better result. At the very least, there is something else to think about.