So the last few times I've tried to smuggle something, whether it be the last time I was on Disco, or this time, the 'RP' seems to boil down to "You have illegal goods. Hand them over or die." I don't find that very much in the spirit of RP, even if it is what the rules state.
So here's my thought. Certain cargo elements could mask the elements of other cargo, if A was right with B, and your scanner isn't strong enough. Now, I just tried this in Liberty, and the players response was "You're still smuggling in Liberty and that's against the law." I respect that, but that pretty much circumvents any kind of RP I would try to do. Almost blatantly circumvents RP, I'd say. Law is no excuse for lack of RP.
So here are some examples I'd say might work, based on product description.
Boron- (not a direct quote, but close) one of the isotopes of boron is used to create nuclear control rods in reactors. So, radioactivity has always (and I say always will) mess with scanners. So (and this is the setup I just tried to use) let's say I take 2000 of Counterfit Software and 199 of Boron. Perhaps with say, a Deep Scanner, you'd miss the Software, because A. It's very small, B. Has a low frequency signature, and C. the boron isotopes are messing with your scanner. The Liberty bloke I tried to pull this on had a Disco scanner (and a very big ship) so I didn't bother trying to talk him out of it. But let's try another example.
Say I get, oh, 2000 passengers. And then I take 500 slaves. Scanners in Disco are sort of like airport X-ray machines, I'd say, so all your scanner really sees is; 2500 people on my ship.
I realize how easily this could be abused, and if this is accepted as a viable RP, it would have to be monitored carefully, in case of abuse, but I still think it's valid.
Opinions? And if you're for it, let me know, so I can know who I can actually bother to try the RP with.