This suggestion makes little sense to me. Why would you want to do this, and how does it make sense for you to literally by dying, but have the strength to make someone _not_ try to help you?
Using medikit on yourself while dying also does not make sense. You're dying, you should not be able to move but you're reviving yourself. It's the same, you're still dying but you are able to move and use it. It does not have to make sense since it's not a rp server. It's really annyoing when you can save your life and a 10% revival rate civ comes and tries to revive you and you end up dying or dying and jailed when you could just use mk to save yourself.
About the 'not try to help you' argument.
There are 2 cases when people try to revive you:
1) old player is trolling you cause he knows you will probably die and you won't be able to save yourself using medikit
2) new player that does not know he will kill you
This is not really help, it's just trolling you or lacking game knowledge.
A 10% revive rate is too low, even 50% as a cop is too low. The other option would be as beaten said, to make the revive rate 100% so people won't troll us by reviving.
Edited:
Another option would also be the revive success rate should also be used while reviving yourself but i think players would hate this. I know I would.