I'd like to suggest this feature: When I double-click on a word in the tabbed pane (e.g. on a word in a TM) I'd like CafeTran to add a trailing space when inserting this word into the Target segment pane.
On second thought: I think that it would be best to reserve this addition of a trailing space to the pressing of a keyboard shortcut when double-clicking. Only when you press the keyboard shortcut, the space is added.
The new build is going to have "Adjust word spacing".