Just a note - we pester Kiva very, very (very) regularly (sorry Fiona) about adding group account, or sub-account, or dual password functionality. Our group is one of those with "substantial balances" and it is only going to increase dramatically, this is a fairly pressing concern for us.
They're definitely aware of it as a priority, but as many have noticed their engineering concern of late is increasing functionality for partner organizations on the OTHER end of the system to make sure they can keep the loan supply coming in a scalable and responsible way. That said, a bit more pressure from all you fine folks wouldn't bother us as its definitely a direction we hope to see sooner rather than later

Check the website for some dynamic group lending action if we do say so ourselves!
www.agentsofchange.caShawn
Agents of Change