Yup, we have more elements in the full builder right now, but we kept the demo limited for aesthetics. More data entry types, more types of media, other goodies :) You won't be able to make anything under the sun, but what you can make will look and feel top notch.
There's lots of monetization models we could use, and part of the reason we're doing the current beta is to find out what makes sense for us. Doing specific tweaks to individual apps is on the table, but it's not as appealing because it's hard to scale and keep the quality high.
You might want to consider making it clear that there is more than the demo shows. The demo is great but I was under the impression that I was looking at the full version and quickly discounted it thinking I need more tools than that. I think just a line of copy explaining that would be helpful.
There's lots of monetization models we could use, and part of the reason we're doing the current beta is to find out what makes sense for us. Doing specific tweaks to individual apps is on the table, but it's not as appealing because it's hard to scale and keep the quality high.