"Patching" events

Hi, I was looking at ways to update existing events over the API, by adding/updating a couple of data values. I was hoping I could simply do some sort of "add or update" operation, but this does not seem to be possible.

Could someone please help me
1) confirm whether this is not possible, or if I have just missed it?
2) consider adding support for this in the future?

Even better, if it was possible to do this on a large set of events at the same time.

Thanks
Olav