Specifiy @Named @Alternatives

It's actually a must-have for product development and a common case.
We would like to have multiple implementations in our core and just activate them via alternative.

I talked with struberg and its currently not defined in the specs.

e.g.
@Named public class A
@Named @Alternative public class B extends A

What should acutally happen if B is activated via beans.xml?

IMO B should be available in EL via "a" and "b".