I've sent some feedback to Rockstar regarding a possible hardcore mode. HC servers would automatically turn off auto aim, radar blips would disappear unless someone shoots with an unsilenced weapon, and those with a bounty wouldn't be able to hide in their apartment etc.
Also, you wouldn't be dumped into the bad sport pool for blowing up player vehicles. If you're going to cry about having your personal vehicle blown up whilst in a shoot-out, then you need to go back to shoving lego up your arse.
Hopefully this would deter some of the squeaky f*cking kids I keep hearing on the mic.
I doubt they'll implement it, but it was worth a shot.