Thats pretty much how it works already. The rewards for evil are more tangible than those for being good.
If you play as evil in any game, you will almost certainly have more stuff at the end than if you play good. Since you can kill both sides and nick everyones stuff.If your doing your job of roleplaying a good character, then you wont be rooting through peoples belongings everywhere you go either, even if the game dosnt directly penalise you for those sorts of actions.
The idea of giving most of your money to beggers dosnt strike me as particlularly LS but more along the lines of stupid.
Shooting a begger as DS , yep I can see that. Your doing him and everyone else a favour.