To address the aforementioned issue with geometry coming in the wrong way, x-axis flipped or incorrect UVs, we have added new conversion options to the import process. This will allow you to pick a preset, Maya or 3DS Max, or define the conversion matrices / UV channel flipping yourself (Unreal Engine Issues and Bug Tracker (UE-35510)). Our aim is to continue adding presets for DCC packages but for that we will need your help identifying issues so we can test and make sure we add the correct conversion preset. The distance fields issue has also been resolved (Unreal Engine Issues and Bug Tracker (UE-36059)), this all will be in 4.14 
Cheers,
Jurre