I was intrigued by the idea of Dash's loyalties being divided between Ponyville and Cloudsdale, as shown in the second season premiere. This picture reminds me of that. I would be interested in seeing it explored more.
A very bleak (but beautifully so), pseudo-industrial take on Cloudsdale/Rainbow Dash's cloud home. Sad to think that even an agrarian utopia like Equestria would inevitably succumb to the grey march of "progress".