yea ofc its all about the fun i didnt think about uboat or ship duels tbh, because there were none in the western afaik
what we did were the oldschool things: standing back to back, ref says go, ref says turn and shoot the enemy down. gonna be hard or lasting super long with uboat or ships (regarding to spawns etc but that could be modded tho) and a duel in plane would be nothing else than a normal dogfight imo. we can try some equipment duels but in overall we should stick to "normal" weapons (we just tanked because pyro wanted us to )
boat vs boat , apc vs apc or parachute vs parachute is possible ofc but for the chutes you need to mod the spawns then where you spawn back to back in mid-air alternative jump from B17 or JU88A
i recommend to allow the knife only when you run out of ammo btw
and yes i think a ref is needed to count down the steps (gol has no sound e.g.) and watch the turns (if one turns way too early -> replay)
about the rules and league structure: i didnt think about that too much yet. maybe we could do it in the system the BF-League runs with. Both choose a weapon, 2 rounds each are gonna be played, winning all rounds means 4-0. regarding to the amount of games everybody played it would be possible to join in anytime then. but we should have a deadline then to make playoffs. lets say top 8 after 16 matches reach it and a random bot chooses the matches then...
ingame rules: both agree on the weapon, both agree to the winning rounds (perfect for bf league structure = 10 overall) and both agree on the amount of steps (time counting down)
great that this seems doable