It pisses people off because return links are the "trade" part. When you are a new list, there might be little or no benefit to submitting to you, but you are asking for "big guy" return link. When I see a complicated return link you originally suggested, I would expect some serious traffic back. If it didn't work out, well, I wouldn't be all that pleased! :-)
They are looking nicer now.
You might want to look at the return links for some others (like link-o-rama, example) and try to keep the dimensions similar. It makes it easier for people to use your return link on the same page as "the big guys".
Alex
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