And it would be good to be able to change names without calling support.

Depends on the service. If an attacker takes over your account and changes your name to theirs, they get the degree/certificate/award, or they pickup your purchase, etc. Or the reverse, they change their name on their account to yours and collect your payments, etc.

Still, I would like some kind of way online to change name / surname. It is annoying when you officially change it, but cannot do that online. It could be possible to attach a document and human review this, compared to calling support to another country can be costy.

Also - it is always possible to confirm with email or phone, by sending a code to enter. There is always a way, you just need some creativity :)