I'm also waiting for an API key, but for quick visualization purposes I still would rather integrate Tableau. Python has great libraries, but can be time consuming and rather use the language for in depth stat analysis.
The only way I know to do some custom dashboarding is to get API access, which we are waiting for right now, and create something from scratch or hire a company to make some nice dashboards for you.
Service Titan isn't dynamic with visualizations let alone allow you to make custom visual interactive dashboards, everything is preset. Tableau can handle large amounts of data, user friendly, mobile friendly, and most important part (for me) integrates with scripting languages like Python or R.