If you're looking for a vision building for London, Covet Place is a good one. In the Downtown vision report released last year, it occupied the current parking lot of the JLC: http://www.london.ca/Planning_and_De..._04JAN2012.pdf
-Another vision is the new city hall from that report... although I doubt there is enough to go on for a drawing.
In addition, the central library tower was canceled, so you can make a drawing for that if you want to.
One and Two London Place, as well as the City Centre towers could use a redrawing, as you guys are simply churning out creations far better looking than they
. The Renaissance II is not a mirror of the first tower as indicated so it can be drawn as well. The tops of the Talbot Centre towers are now blue... just a quick paint job there.
And yes one fantasy drawing per member per city. Simpseatles does some good hand drawings for London that could be used for fantasy drawings: http://forum.skyscraperpage.com/show...04#post5665704
Anyways those are just some ideas. Of course you can always do stuff for other cities if you want. The Agustus Tower in Windsor is a good candidate... the addition to Casino Windsor.