I think we're at a point where USWDS Sass could support a more modular build process where:

• Users could choose which components modules they wish to install
• We could support the package-based installation method better
• We could work to support a more modular build process in uswds-gulp — only compiling the parts of the system affected by a change
• The uswds-layout-grid package could be move into components
• There could be a clearer way to include all theme settings files
• Font and image asset copying/references/etc could be more connected to the build process in such a way that better supports an upgrade-friendly workflow