Ergotech Speaker Mount Accessory - Interested?

A while back Ergotech had posted this mock-up for a speaker mount accessory, for use with their HD monitor stand line. There has been some renewed interest in pursuing this accessory, and I'd like to see what interest there is for the item. The set would have three stands for L-C-R speakers. The current idea was to provide a universal shelf (as shown below) that satellites could rest on.

Would you be interested in adding this to your HD stand? If so, what would you be willing to pay? Also, what speakers are you using? What is the size and weight of the satellites and center speaker?