I agree that the vehicle path finding and the infantry AI is just terrible. Save that shit for the single player campaign.
We should all be very happy to give up a bit of artificial realism for more responsive and accurate controls.
Almost all the other RTS games have smoother vehicle path finding because they allow for a bit of "cheating" such as clipping through obstacles and power-sliding to the side. This is a good thing because it makes everything feel fast and smooth.
The infantry behavior in DOW2 was very accurate and good, as someone mentioned above, and should be implemented in COH2 as well.
