I am a former WordFast user. I certainly believe Trados is superior, this is why I switched products. But I have not found some nice and effective WF features in Trados which would be very useful.

One of them is a suggestion from the segment's source. 

For instance, when I find a rather complex foreign name, say, Venkatanarasimharajuvaripeta railway station, in WF I type the first letters and the suggestion pops up. In Trados this is not happening (unless I had found the name earlier, but not on a first time basis). My workaround has been a simple copy-paste operation, but the feature is quite useful and time saving.

Also, the "blue underlined" suggestions sometimes break full units into pieces (at every space character) and I need to select one by one, while WF somehow offers different degrees of "segmentation".

I hope my explanation and suggested features are clear enough.

Thanks.