Personally not too sure...One thing I don't like seeing is people forking out money for content that is locked away and unattainable...I understand we like to Roleplay, but Roleplay has to do with the person. If I go round with a big gun, that doesn't stop me from roleplaying, so I feel that's a poor excuse. The sniper in a hill thing will stop, but those people will now just go round as a big group, with one or two dotted in close proximity in the jungle, it'll become "We've got guys aiming at you", and they will be hiding behind a tree or some shit...
I agree with Wilco on this one, making the content available, but making you work for it should you wish to obtain it. Yes, it may make them more violent, but it may make some use their head a bit more, hide it when travelling, not wanting to get into firefights if they know they are only wanted for a 1 count of car theft, they might actually try think of a reason rather than just pulling a gun...
I also agree with Capt C when he talks about stuff going away on death, such as licenses etc. You may argue again that it'll make people more violent, but again, that's down to the person, some people may try to roleplay it to a harder extent, because they know what's at stake.
Personally I feel a good rolemodel for this place is Grand Theft Auto, with their new update out you can see how little cash they want the player to have, granted that's because they want you to buy shark cards, but just follow the same sort of recipe. Set prices high for weapons, certain clothing, licenses etc. Just make sure you follow through with making drugs, iron, copper, salt and all that worth a lot less. Get rid of the 50% discount on weapons (for Tanao only if you wish) and add systems that allow proper punishment. Such as removing drug money, removing licenses.