weight-based shipping

Hi - having trouble with overly-general shipping config in MP -- we have some products w $0 shipping (eg., someone paying a deposit for a course), and some things are heavy, some light... I saw you're planning a plugin for integration w shipping calculation (e..g, Zencart can link to USPS and Fedex and get the actual shipping based on weight and destination). Is that actually going to happen soon?

I'm afraid that for stores like ours, w a big range of products and global clients, a more complex shipping scheme is an essential.

- Josh