so a suggestion i have would be to make only miners able to go in mines or near them, seeing as its role play in reality you wouldnt have just any one waltzing in and out of mines, this would save a lot of agro when it comes to rdming and loss of diamond pic. i feel it just makes sense to sort this issue out the amount of admin time used to deal with problems involving the mines is ridiculous.
I'm not talking about afk, I have gently been mining go to say hello to people when they come in and got shot at and as for hits I have never been killed by hitman in mines always random gangsters or thief's and mutants.