If a theme / plugin requires / depends on another plugin, show a note to allow/deny during install.
Maybe include a way to preset options/data for the additional plugin, e.g. if CF7 is required, auto-install it (if “allow” is selected) and provide/install custom premade contact-forms.
@wadestriebel Is this still slated for version 2? I see your message update, but I have a feeling it’s an old one and might be outdated as dependencies haven’t been mentioned recently.