Good morning @alltagsverstand – I’m so happy to hear you found something cool and exciting it sounds 
I also have used the “I feel lucky” button and have started to make a collection note of “curious routes” because some results (not all, maybe 30%) really stop me in my tracks.
As for your selection dialog - sort of like auto-complete in Google – I’ve noted that and have already reached out to the Obsidian developers if there’s a way to re-use their existing search-box.
And at least adding a hot-key for executing command (instead of clicking the button) should not be too hard. I’ll add it to the list!