Instead of using acceleration gates (since they have the drawback of not being able to warp in at range) you could have the filter in place for anyone using the system gates (star gates?) to enter EZA-FM. To prevent someone from using a capital to bring officer mods into EZA-FM you could cyno block the system using code similiar to the pos module or code similar to the cyno blocking for incursions. This would automatically prevent any capital usage in those systems as well thus eliminating the need to police the no caps in those systems rule.

For fighting on stations/gates you could make the station/gate guns act like concord and instakill anyone doing any aggressive action on those grids.

AFAIK concord is still enabled in Sisi highsec so live EFT as you put it is already in the game. Go to any highsec system, fit ship you wish to test, undock, fire 1 volley at the station (attacking the station does trigger concord right?...maybe i should go test that haha!), watch concord blap you, get live EFT results from the loss mail.

To anyone following the rules the measures I suggested are already "in place" since those people would not even attempt to light a cyno in PVH8-0 nor attempt to attack anyone on the stations/gates. These measures simply provide actual unbreakable rules to the rules you already said no one should break but they totally can and apparently aren't receiving any punishment for doing so. I don't understand how that is in any way making any part of Sisi something other than a test environment since those following the rules would not be doing anything different.

Also we did just go over how since you are not a coder you have no idea how much coding it would take to do that (thou I will admit the station/gate gun thing might get measy since IDK how yall wrote the aggression mechanic code...but since you aren't a coder neither do you know how measy or not measy it would be to do so)