Nice work and some thoughs

Imagine 2 melee bots using minimum risk movement (dominant in melee), and 2 bots using provocative movement (dominant in twin duel). The 2 melee bots will be each on a different corner, but the 2 with provocative movement will be on the same corner ganking on the lonely melee bot. But at the same time, 3 bots close together become tasty targets for swarm targeting from other 3 teams.

There must be a balance between minimum risk and provocative movement, or a third undiscovered strategy. Maybe there is still room for inovation.

Sure, but that's assuming both bots on both of those teams survive to the final stages of the round, which seems unlikely. And even if both bots on one team survive that long, I think how much energy they've retained from the "pure melee" early stage of the round will be the most important factor. Maybe on a bigger field than 1000x1000, and/or with 3-4 teams instead of 5?