2) The trade residue is an unavoidable consequence of the finite divisibility of Bitcoin. Yes, it's ugly, but that's what slick GUI's, like Counterwallet, are for.
I've documented a case on the official forums where I think 2 orders should have matched off perfectly but didn't. It left residuals of the originals.
https://forums.counterparty.co/index.php/topic,171.0.htmlI'd like to know if this has been addressed.
I'm looking into this now.