I like the Make Your Own section feature. I would like it even more if it allowed me to arrange content in columns vs. rows.
Similarly, I like the App section because it allows me to enter my own custom code. Again, I would like it even more if there was a way to change the layout to include additional content to the right or left.
So I guess the easier of the 2 ideas might be to have a way to include custom code in the Make Your Own section, AND, to provide a way to change the layout of the section so that >1 content column can be displayed.