So you really think they're going to make sure that Broken Age costs exactly $3.3 million to make, no more no less?
They're a company, they have operating costs. It's not like they just shovel money into a machine until a game pops out. They made an assload of money from their last Kickstarter, 8x more than they claimed they needed. You can bet that'll go into all sorts of things not directly related to their first game.
Actually it's sort of the other way around. Sure they made more than they asked for, but that just meant they could broaden the scope of the design, which they did. Now they're actually estimating they're over budget on their design and working on reducing the scope (again) on Broken Age, plus funnelling money from their other sources into it (Like profits from Brutal Legend PC). So no, they don't have extra money to throw behind another game. Games are expensive to make, surprise surprise.
I backed Broken Age, and it's already been more than worth it for all the fascinating behind the scenes making-of content, let alone the game itself.
I've been thinking about backing Massive Chalice, I can't say that HD versions of publicly released videos (Or the rest of the $50 tier) are worth $30 more than the game alone. I would've liked to see a price point between $20 and $50 really.