One suggestion would be to allow for a selection to be included into multiple categories, similar to the Moodle glossary.
That said, no complaints as the extension functions as described on the developers website. Good show!
Very easy to use and integrate with several options for feeding data to the timeline.
Appearance is easily modified through the interface and CSS.
Support is fast on the forum and via email.
Needs a few tweaks but works out-of-the-box very well.
Would purchase other extensions from this company based on this experience.