Supposedly the trade posts are WAD which is just silly. This is the main issue keeping me from playing now.
i don't think it will be too hard to mod out but I really hope this is actually changed in the patch. It is just as immersion breaking to see Genoa with tradeposts in Denmark as it is to see Norse pagans in India.
All Groogy actually said though, is that it's WAD that they go for the most profitable, not that it's WAD that there is no distance penalty for patricians anymore for whatever reason.
Also, patricians should one way or another stay in their region, not go for a trade post on the other side of the continent, well not before they build several close by.