I also propose that opponents of such a proposal, because the threads mention examples of lost media, create threads about the lost media they mentioned on the thread on the lost media section. For example, if I mention "movie A" on the second thread ("If you could have ONE Lost Media found... what would it be?"), then I make a thread about "movie A" in the lost media section.
It's tricky right now because, well, they are threads about the topic of lost media so the lost media section is the most logical place for them at the moment. That said, I have heard feedback that the forums could be better organized for finding search efforts, and that's something I can agree with. The staff are spitballing some ideas for forum reorganization right now, which will hopefully come to fruition sooner rather than later.