Duelling in Spaaaaaaace!

[Plane]

I could see culture mattering in whether or not you could use ST-based physical weapons, or stuff like beam sabres where ST isn't going to play a role and it's the DX/skill guys who hold the advantage.

Whether using crushing/cutting/impaling/burning also probably matters in designing the scenery of the duel if you have some decent rules in existence on accidentally slashing walls/floors/ceiling on misses/dodges/deflections.

Terrain-based rules on accidentally hitting stuff around you and possibly compromising your weapons or follow-up attacks would be super cool for duels and bar brawls. The lack of focus on this tends to give much of an infinite featureless plain feel. There's elevation rules which somewhat detract from that, but slops aren't the same as obstacles to trip over or yet your weapon stuck in.