Developer Tools: Combined service and templating area

Dear all,
With response variables getting more and more and rather complex feedback e.g. on calendar events for newbies like me it would just make everything so much easier and within one flow if I could somehow use the response variables from service calls directly within templating. Either through ‘tranfer sample data to templating’ or a combined tab that allows users to first enter service calls and use the data in a templating section below in ‘live mode’.

Maybe it would already be interesting to understand how more advanced users achieve their goals with more complex topics without constantly switching from automations, scripts to developer tools or by manually defining data structures.

Best regards
freddeh