In order to facilitate creating accessible applications it would be very useful if you could implement an ARIA tags section in the properties panel for most objects in the modeler that would allow the developer to set values for various ARIA tags for each object. At the moment it is very difficult to implement an accessible application that meets WCAG 2.0 standards, especially for multi-language apps.
Some work would have to be done to decide exactly which ARIA tags should be avaiable for each object.
Also note that some of the tags (e.g. aria-label ) would need to be included as translatable fields so that they can have multiple values depending on the language in a multi-language application.