The icons on the minimap that aren't obscured by red lines look fine to me. Do you mean the trapezoid is stretched? It's stretched for a good reason - the view is wider, and the trapezoid represents your view. Therefore, the trapezoid is wider.
As for why it gets a B+, I explained why in the post where I said it gets demoted to a B+. It has a flaw that we didn't notice the first time around.
No not the trapezoid, the dot representing the unit is stretched horizontally.
The blocks representing buildings are scaled properly, the dots representing the (infantry) units are not.
Here it's enlarged and in a better format:
the unit icon is stretched...
It's something I noticed in a multiplayer game today, all my units dots on my minimap were stretched... I only went 16:9 yesterday so hence I just noticed it...
Original files in png format ( warning they're 4.6 mb together) so you can zoom in yourself if you don't trust my edit:
4:3
http://iv2ycq.blu.livefilestore.com/y1psumdaJK1BFNcaoykAS3ugKVZJEMQuMRRYlCKHCJYGFf0UoOzfq9OCwdtGANqACrZXAKccmNVC-U/cheros-20090208-000637.png
16:9
http://iv2ycq.blu.livefilestore.com/y1pj9v4AeuCgRKPuXW5aESvfPTQTuD5UmIYcz6dzL6R_NiwZ5bzuW7Ee85-VYdtGIidGlZIQT8eZVQ/cheros-20090208-000335.png
A different picture (16:9) showing lots of deformed circles on
the minimap, they should not be stretched horizontally but should be perfect circles, they are not good circles now...:
http://iv2ycq.blu.livefilestore.com/y1phlt6jfKZqQasXrVEJvj9kY7zYBolGTYEIprCUfLs8MbS4yPD_cDyyKAyReN0HqP8aoyuhL9ed0J7o4dAgsVyrg/cheros-20090208-022026.png