Ouch,
That was a lot of reading through.
Frankly, we have all started off with 0 feedback at one point or another, be it the dark side or the big river or anywhere else. I for one have given my E**y user name and feedback score on my about me page; if anyone wants to check it out that's fine with me.
I have been selling online for nearly 4 years now and didn't have any feedback to start with; equally I didn't have any feedback when I came here just over a month ago - my score now is 13 and will hopefully continue to rise.
My view on this is that no feedback should be allowed to be transferred at all from any other site. Like I am sure other newbie sellers will do, when I first came here I checked out my "competitors". There are a few of them around with quite high feedback (my thoughts: great this site will be ok for me), but on closer examinations they have only sold a handful of items here in several years, while all the rest of their feedback is imported from other sites. Equally, there are other sellers in my category who have started on this site with 0 feedback and have done well.
Give your username at other sites, so anyone can check you out, but please don't "dilute" this site's feedback.