Rated 5 out of 5 stars

Great add-on, works exactly as described!

Question for the dev: Is it possible to add a feature to minimize TB on start (like it was with Minimize on start and close add-on)? Or is there something in the new API that prevents this? Thanks anyway!

This review is for a previous version of the add-on (1.0.0.1). 

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Minimize on Close still uses the old Add-on API (and will probably be ported as experiment to 78, which is similar to the old API), so yes that would be possible. But I don't think minimizing on startup belongs into an add-on named "Minimize on Close". If you or somebody else wants to implement a separate add-on to minimize on startup, feel free to take Minimize on Close as starting point, though. :)