Thank you for the info.
I think having full control over the form properties via REST is important to support arbitrary UI technologies.
Without it, Activiti would be limited to server side UI technologies such as JSP or JSF only.
This would be a unnecessary limitation.
For the time being I am thinking of using the database REST API or creating a servlet with a custom REST API.
It would probably make sense as a workaround until the form properties are accessible via the "official" REST API.
Do you think the form properties will be accessible via the REST API in one of the upcoming releases?