I agree with what you said. It's really a simple fix to be honestly to all this. It's having level limits in some area for example around everything before wolf mountain you can't attack anyone under 20 levels. However low levels can attack you and then you can attack them. Giving the chance for a lower level to risk it all or nothing type. So a level 125 is walking around and a level 90 see it. He might be just say "Alright, This is my amount to get bank loot!" then he goes and pokes the 125 with a d scim However everything in wildy all levels can attack you and being skulled means everyone or anywhere can attack you.
Then everything after wolf mountain put in level range limits so example 21 can't be attacked by anyone but people under level 50 a level 61 can't be attacked by anyone but under level 80 then 80+ can be attacked by anyone. Simple level caps like this will see a big fix to rot and other people killing skiller and stuff. I know it's a pvp game mode but without the skillers. Go and make your own arrows, dragon bolts, your own potion and farm your own items. Might as well remove trade at this point if you think skillers should go back to osrs or make everyone an ironman. They're needed.
I honestly don't die unless I'm doing something risky which is duo, I have all the quest I need atm (Need mm and DT done only) I have escape and other stuff planned out in advance but their people that prefer to play in a different way which is more risky but in all honestly. Killing someone that is level 50ish and you're a 110+ cb with 5 keys already is trash. Dude is getting like 200k per hour cutting yew trees and you attack him without even picking his stuff up or getting his bank key since it's only around 50k