@ciupava @grischard @soporificoctopus overall I think the idea in interesting, however, I see a few issues at the moment:

1. this seems completely non-accessible
2. I think it requires more detailed instructions
- how precisely must the shape match? (some examples have a hand-drawn shape, some are zoomed in to show there is a slight inconsistency, though the shape is almost good... are they correct, are they not?)
- must it be a single buildings or are multiple buildings OK?

1/2