I think it could be a nice feature. Pls file a JIRA issue.

In order to get that bean, a bunch of quite verbose code is needed. I.e I came up with:

HttpAuthenticationMechanism mechanism =
     createRef(
         beanManager.resolve(

This wouldn't work because BeanManager.resolve() attempts to resolve the ambiguities thus eliminate all non-alternative beans.

This would not work - you would need to distinguish the original injection point.

         return ...
     }
}

Or reuse the @Delegate (perhaps with the @Alternative annotation)

-1 This might be confusing.