Hi Jennifer! We sure are targeting a feature along those lines to give you more control over the layout of a project, both in the Analysis Workspace, and in other workspaces that you might create for your colleagues. (For example, you might want to create a project with multiple tables side by side, instead of one on top of the other.) I think this will come along a little later in the beta as we work toward allowing you to build those other workspaces.
I very much appreciate your encouraging words about the tool overall, and will be sharing it with the team!