Keep in mind to whom you're marketing here: developers. The average casual developer doesn't need a ton of help when it comes to adding neat new features to their games. After all, they're developers; they can build those features themselves and probably enjoy it thoroughly.
Where they do need help is in marketing and sales, and they need more help than you realize. (Speak to several casual developers and you'll quickly realize that it's both very hard and quite expensive to compete with the major players.) For us, that meant changing our messaging from "Features! Yippee!" to "We bring you a huge new base of customers via these features, and here are metrics and stories to back that claim up!" Features for the sake of features as the value prop, when the developer is probably already losing money, didn't work well for us.
If you can adequately explain how integration leads to dollars, then your developer base will skyrocket. This part of the story is missing from your site, imho.