As of CafeTran Espresso 2017 - Yeddi Update 15 (2017-06-27), CafeTran offers:
Automatic fragments adjustment. This a new and experimental feature which picks fragments/terms from the current segment and updates their priority on the fly. It can also adjust to some slight changes in the fragments (e.g. plural forms) creating virtual fragment pairs if their do not exist in your resources. The feature should be very helpful when there are still good matches coming from low quality/priority resources to use in auto-assembling. Then, CafeTran will enhance their status automatically for the current project. Furthermore, it detects term's synonym usage adjusting its priority automatically.
The feature is given top priority and users are encouraged to test it and provide feedback here.