Thanks to Simon for asking and Pavel for answering:
In Vanilla DSpace you would have no licensing module. Whether it is useful to have an option of setting up a custom license ad require it’s online signing and other apects… I don’t know. If you have all data in the repository now and in future under CC licenses, it is not useful.
There is a ready-made metadata schema for language-data or tools + export into CMDI. Of course if you find it bad fit for you and you will bemaking a different schema + submission workflow, that is no bonus either.
a submission workflow that generates the PID at the begining, so you can include it in a paper submission while still finishing the data, and you can pass the unfinished submission to a colleague to continue working on it.
You could go on like this, there are quite a few other differences.
The bottom line is that I would definitely think about these differences before installing, because you might be right, maybe it is not worth it for you. Only you (as a centre) can decide it, ideally after finding out what the differences actually are.
For a bit outdated, but mostly still correct overview of the main features, you can look here. My presentation slides have more details than the paper itself:
https://invenio.nusl.cz/record/407834?ln=en
https://invenio.nusl.cz/record/407834/files/Stranak_prezentace_EN.pdf?version=3
(Information extracted from this slack thread - if you do not have access yet please mail slack /at/ clarin.eu)