For my terms, 5% of all kurviger users miss the zoom level at most - and then 95% should read additional irrelevant information? I’m grateful for everything I don’t have to read. KISS = keep it simple and stupid!
In order to have it in scale bar, would need to add an option to select between existing scale bar (fixed values / variable length) and a new scale bar (fixed length / variable values) to host also the zoom level.
In any case both implementations don’t load UI, buttons are auto hidden, scale bar would be optional.