John,
I don't think the "new" feedback system is intended for "lowball" offers. I guess it could be a way for someone to get some feedback even if they have not purchased, or sold anything. I just had some dealing with a very pleasant gentleman that was interested in an item I had. I ended up selling it hours before he decided to purchase. Based on my emails, I have no doubt he would be a great trading partner. I could leave feedback that said that. Also, if someone is really nasty during the process, I could say that too. I personally won't do either, and, I tend to agree with you, it doesn't sound like a good idea.
I don't think the "new" feedback system is intended for "lowball" offers. I guess it could be a way for someone to get some feedback even if they have not purchased, or sold anything. I just had some dealing with a very pleasant gentleman that was interested in an item I had. I ended up selling it hours before he decided to purchase. Based on my emails, I have no doubt he would be a great trading partner. I could leave feedback that said that. Also, if someone is really nasty during the process, I could say that too. I personally won't do either, and, I tend to agree with you, it doesn't sound like a good idea.