The criminal/police side of PERP has always tended to push the boundaries of what's allowed for their own advantage. Be it muggings, raiding, basing, it doesn't really matter, the fact is that when somoene sees something as competitive (which raiding/defending definitely lends itself to,) then they will try to get whatever edge possible over others. It's always been the case that we set rules/precedent and players find "creative" ways to argue around them.
What's difficult about setting a strict set of rules for a rolelay server is that every situation has it's own unique context that means that two situations are rarely alike.
Enforcing a strict and consistent set of rules is difficult, and I would argue undesirable. Roleplay needs some breathing room for creativity to thrive.
That being said, it's difficult to adhere to this idea when, if we allow one thing in a specific situation, everyone else jumps on it and it becomes the "new meta," the action then being performed by people who did none of the brainwork to justify it and just do it because it was allowed that one time.
see a lot of this, people asking if they have KoS on somebody for such minor things, basically trying to justify it because they really just want to kill anybody, and they want a flat "yes or no" instead of considering their actions against the roleplay framework set out by the rules.
To have a set list of things you can and can't kill for is a little cringe imho, because it implies that's the only solution to a roleplay dispute when it passes that threshold, when really there's so many more fun and interesting ways to go about it. It's lazy work and shoddy roleplaying. (this is one example used to underline my wider philosophy)
This whole thing went off topic fast, but I hope most of this was at least tangental to the topic at hand.
I stand by one thing, and that's that a lot of the player base do not fundamentally understand or appreciate 3.4 as a roleplay prompt. The rule is esentially "Value your life," but the hidden subtext should be "Value other people's lives too." You are roleplaying as a real person, and should therefore value other "real people" as you would IRL.
TL;DR: the edges of the rules being so well defined may actually harm roleplay and player expression, but players will always push against these boundaries to a degree where we either limit them or let them slip over time
