I don't get why this is extreme in any way? Shouldn't this be exactly what you had in mind ? Your work stays with your license, others work stays with their license.
But as much I would like to see it this way, I don't think that if you deliver all in one package ( 7z-file ) it will be possible to say, hey, these are different things, just "accidently" delivered together. At least here in germany its a very clear case.
@Omega: I don't know what a "C&D" is to be honest.
Just to give you an idea how worse it is in Germany:
As far as I know here in germany you can even get into trouble without any interaction from the original author. You get a "Abmahnung" form a lawyer who saws that you have any copyright issues.
According to Wikipwdia already 6% of all germans got such a "Abmahnung" yet, these are 4.2 million german Internet users ( see http://de.wikipedia.org/wiki/Abmahnung#Missbrauch
An "Abmahnung" means you have to pay round about 1000 Euro and the chances you can defend yourself are very low, because all the courts give right to the other side. In addition you typically have to give a statement that you will not do something like this again. If you do this, you will get punished a lot harder next time you do anything like this. And of course you have to instantly take down everything related to this case.
Of course not all those "Abmahnungen" are for issues like this, you also get them if you share a movie or mp3, but they really take everything they can at the moment to get your money. Especially picture/photo copyright related "Abmahnungen" are very common at the moment. It is somehow a modern gold-rush mood for the lawyers and they have automated bots who "harvest" new cases in the internet ...
If you ask me, germany lives the american copyright dreams with german "Gründlichkeit" going completly over the top at the moment.
As I live in germany and I don't want to be one of the 4.2 millions, you must respect that I don't want to be responsible for hosting anything where I see license touble. And btw, we already try to host everything we can ouside germany to get at least a bit of security.