You realize that uncouth and high social skills is shooting yourself in the foot, right? Because you will pay double cost for those social skills, negating the points you got for the flaw in the first place. And you will still be treated as unaware for any social skill you don't possess, and will need to make social skill tests for things that would be obvious to someone without the quality.
The addiction is even worse, because the character doesn't
have to go cold turkey. He has all of those toys that he can hock on the cheap to get his next fix. If the GM is especially sadistic (it is a severe addiction, after all), he might even have your character hocking a few organs to the local street doc for his next fix. And let's not forget the dice pool penalties for going through withdrawal, or the fact that the character
will have money for the next hit as soon as he takes his next job.
Munchkins generally depend on a lenient GM - or a new one, or an overwhelmed one. They differ from mere min-maxers or character optimizers, in that they will exploit rules ambiguities with no regard for logic, or even outright cheat. A min-maxer might take genetic heritage to get Reakt. A munchkin will take the line about geneware being able to duplicate some bioware, and try to get synaptic booster: 3 out of it. Other tactics I have seen:
You are limited to one 6 or two 5's for your starting skills. A munchkin will get aptitude and a skill of 7, then get a skill of 6 or two 5's as well - after all, the rules only limit you with regards to 5's and 6's; they don't say anything about 7's. Similarly, they will try to stack two (or more) sets of form-fitting body armor together.
Possession mages can be munchkin, if the GM allows a character with 1's in all physical stats, who summons a spirit for the sole purpose of buffing the character's Attributes. This exploit depends on "Be me for the day" counting as a valid service.
Munchkins will try to get NPC-only options, such as blood magic, or abuse the rules for customizing weapons to create things like full-auto sniper rifles.
Some munchkins can take the vindictive, combat monster, paranoia, and bad rep negative qualities, and it is free points, because that is how they play all of their characters anyways.
