I didn't really checkout the over-sampling option in Metaplugin myself ... especially regards to Nebula.
I understand the concept used on a per plugin option [for those that offer] ... but not so clear about Nebula in that mode ... project at 44.1 would run @ 88.2 in Meta .... yet many libraries are 96k ... those at 44.1 would still load at 44.1 ... I just couldn't understand what benefit could result. Or if Nebula would even run in that mode
My bottom line has been to work in the native rate of the release. I do own some 'excellent' SR converting programs ... I can hear the conversion, but I have the original as reference, therefore the bias. The client has the choice and decision.
Yes I think my option 6 was a misthought from rhe start. So let's forget it... But the other uses seem possible. So far I have not stumbled into any problems what Mathias mentioned there has previously been. Though as said, I just discovered this.