It's all a matter of respect though. People spend time and energy making things. Whether they are derivative works or not, the authors deserve to be respected, credited and asked for permission, if not compensated. Its that simple- warehousing sites could seek that permission if they could be bothered. Just because you necessarily relinquish some measure of control over work when you post on the net, other people shouldn't have the right to do whatever they want with it. I didn't say lawsuits would come into it, but that's a good illustration of my point. Let's say some bozo somewhere prints off a disc with a lot of MUGEN assets and sells it for a sum money, none of which finds its way to the individual authors? That much is obviously unfair- the only difference between that scenario and warehousing the files is that the theft becomes intellectual- the authors are still being robbed of something. So again I don't know jack all about MUGEN but on principle archiving other people's stuff without their consent is irresponsible. I stand by my no. If this kind of thing happened to anything I authored, it would absolutely deter me from releasing any more work in the same channels.