This is really a quick task !
When adding a attribure name trough the UI its impossible to use template tags or tags without value (angular viewChild) for example angular:
(click)="function()"
#dataSelectior
[ngModel]="name"
this would allow to export the design as a template for an angular application and reenable exports.
The actual problem is a too strong regex when adding custom html element attributes trough the gui