I'm winging it here, so dismiss this idea if you think it is a stupid. Does BitFunder allow private sales of shares from one person (ie Ken) to another (aka 'the buyer')? You know about a Dutch Auction? Ken could ask 'who wants to buy x shares at y price' (example: 10k @ 0.005) then reduces the price in 0.0001 increments until someone bites? This technique would only be used to issue new shares into the market. Obviously once bought, they trade on the exchange as you'd expect. The main benefit is it removes the need for large walls, and allows Ken to test the market in a fair way, ie everyone sees the first high Ask and is welcome to grab the offer when the price is reduced to the level they find acceptable?

Like I say, this could be an insane suggestion, but remember the Facebook IPO? They couldn't even get that right with the 'smartest' brains in Wall Street, the price went all over the place on launch.