Everybody wants to be the one that can say "I drew the freedom tower!!
". No one really cares about drawing little 12 storey buildings tucked behind corners in Chicago.
I think it's an ego thing. Personally, I wouldn't waste my time on something that already has several decent drawings, unless it was a building I really liked and wanted to draw for fun. (Such as socialvezekeringsbank in Netherlands, I wanted to add a diagram that showed the odd windows, and THEc deleted his. It was an alternate angle!! You don't have to delete alternate angles!
)
Speaking of which, if they draw the building in an alternate angle, that should be ok.